A total of 36 valence electrons make up the IF4: seven from the iodine atom, seven from each of the four fluorine atoms, and one from the negative charge. Iodine will serve as the main atom. Four single bonds will be created with fluorine atoms, totaling 8 of the 36 available valence electrons.
Does the planar square shape of if 4 exist?
Hybridization is therefore [sp3d2], and although the molecule has an octahedral structure, the atom's geometry is square planar because iodine carries two lone pairs of electrons, one above and one below the plane. As a result, the molecule has a square planar shape.
What is water's steric number?
In the case of water, the central oxygen atom possesses two non-bonding pairs and is connected to two hydrogen atoms. The steric number for water is 4, which is calculated as the sum of the number of atoms linked to the central atom plus the number of non-bonding pairs.
To know more about Lewis structure visit;
https://brainly.com/question/20300458
#SPJ4
What causes comet tails to point away from the Sun?
As a result of the sun's radiation pressure, comet tails will always point away from the sun. Compared to the gravitational force acting in the direction of the sun, pushing them away from the sun.
The study of the chemical reactions that radiation has on the matter is known as radiation chemistry, a branch of nuclear chemistry. This field differs greatly from radiochemistry in that the material being chemically altered by radiation does not always need to contain radioactivity. As an illustration, consider how water is transformed into hydrogen gas and hydrogen peroxide.
Ionizing radiation interacts with the electrons of the absorber as it passes through matter, depositing energy in the process. Removing an electron from an atom or molecular link causes radicals and excited species to develop as a result of the radiation's interaction with the absorbing species. The radical species then continue to interact with one another or with molecules nearby.
Learn more about radiation here:
https://brainly.com/question/13934832
#SPJ4
Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. In this reaction, dark silver sulfide, au2s, covers the surface of silver. When silver is polished, this coating of silver sulfide can be removed from the surface. This makes the silver shiny again. Enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient. ).
The balanced equation with correct coefficients is represented as follows:
2Ag(s) + 1H₂S(g) → 1Ag₂S(s) + 1H₂(g)
The chemical reaction taking place between silver and hydrogen sulfide is represented as follows:
2Ag(s) + 1H₂S(g) → 1Ag₂S(s) + 1H₂(g)
When silver metal reacts with hydrogen disulfide gas, it yields silver sulfide and hydrogen gas is liberated along with it.
This reaction is termed as single displacement or replacement reaction.
The coefficients in an order are 2,1,1 and 1.
To learn more about chemical reaction check the link below:
https://brainly.com/question/11231920
#SPJ4
Silk is a natural fiber produced by the silkworm. How is silk produced by the body of the silkworm?
The cocoon that the Bombyx mori caterpillar spins yields silk. The thread fibers are secreted from the caterpillar's mouth, where they are spun into a cocoon.
Silk strands are used in the creation of cocoons by silkworms.
Proteins called sericin and fibroin, which are synthesized in the silk gland and released through a spinneret at the larvae's head, make up these threads.
To produce silk fiber, one thread is chosen from the cocoon and unraveled.
Mulberry leaves are used to feed the silkworm larvae during this phase, and following their fourth moult, they climb a nearby twig to spin their silken cocoons.
After treating the cocoon with boiling water, the silk is tenderly unraveled from the cocoon. 10 kilogram or so of cocoon produces 1 kg of silk.
To know more about cocoon :
brainly.com/question/13587366
#SPJ4.
Predict the charge that a strontium ion would have.O 2- O 1+O 2+ O 4- O 6-
The charge that are Strontium ion would have is +2.
The atomic number of Strontium atom is 38. Strontium is a metal that burns in air and reacts with water.
The electronic configuration of the Strontium atom is [Kr]2s².
The Strontium atom has two electrons in the outermost 5s orbital.
Show the electronic configuration of the strontium ion will be Sr(+2).
When is Strontium acquires and ionic state the two electrons from the outermost 5S orbital jump out.
Because this outermost orbital has the highest potential energy.
So, where we can say that the charge on the Strontium ion will be 2+.
To know more about Strontium Ion, visit,
https://brainly.com/question/2031834
#SPJ4
When using hot water to manually sanitize in a three compartment sink what temp should the water be.
Depending on the sink you're filling, the three-compartment sink's required water temperature varies. For the first and second sinks to comply with FDA regulations, the water must be at least 110 degrees Fahrenheit. The third sanitizing sink's water must be 171 degrees Fahrenheit or hotter if you intend to use it.
The three-compartment sink can be used as a suitable hot water sanitizing method. The object is submerged in water that is at least 170°F in temperature for no less than 30 seconds as the last step of the wash, rinse, and sanitizing procedure.
Learn more about the three-compartment ,
https://brainly.com/question/26801494
#SPJ4
a 275.0 ml sample of o2 is collected over water at 60.0oc. the total pressure is 755. torr. what is the volume of the o2 at stp? (the vapor pressure of water at 60.0oc is 149. torr).\
a 275.0 ml sample of o2 is collected over water at 60.0oc. the total pressure is 755 torr is
Ptot = PH20+ P02
P02 = 766-149 torr= 606 torr
V2 = 180ml
What is torr?
A torr is a unit of pressure based on an absolute scale, defined as exactly 1/760 of standard atmospheric pressure. Therefore, 1 Torr corresponds exactly to 101325/760 Pascals. Historically, torr was thought to be the same as "millimeter of mercury", but later he was redefined by the two units to be slightly different.
Therefore, Ptot = PH20+ P02
P02 = 766-149 torr= 606 torr
V2 = 180ml,
A torr is a unit of pressure based on an absolute scale, defined as exactly 1/760 of standard atmospheric pressure.
To learn more about torr refer the given link:-
https://brainly.com/question/13893899
#SPJ4
Which component is not directly involved in the process known as translation?
(a)Ribosomes
(b)tRNA
(c)DNA
(d)mRNA
Option (c) DNA is not directly involved in the process known as translation.
The process translation is the process of polymerization of amino acids to form a polypeptide. The order and sequence of amino acids are defined by the sequence of bases in the mRNA. The amino acids are joined by a bond which is known as a peptide bond. Formation of a peptide bond requires energy. Therefore, in the first phase itself, amino acids are activated in the presence of ATP and linked to their cognate tRNA- a process commonly called as charging of tRNA or aminoacylation of tRNA to be more specific. Translation begins when small subunit encounters an mRNA.
To learn more about Translation process please visit:
https://brainly.com/question/2548094
#SPJ4
Determine the oxidation number (oxidation state) of EACH element in the following six compounds.
a. CuCO3 e. SO2
b. CH4 f. (NH4)2 CrO4
c. IF
d. CH2Cl2
The oxidation number of Cu, C and O in CuCO₃ is, (+2), (+4) and (-2), The oxidation number of C and H in CH₄ is (-4) and (+1). The oxidation number of I and F in IF is, (+1) and (-1). The oxidation number of C, H and Cl in CH₂Cl₂ is, (0), (+1) and (-1).The oxidation number of S, and O in SO₂ is, (+4) and (-2). and for (NH₄)₂CrO₄, N has an oxidation number of -3, O has an oxidation number of -2, and Cr has an oxidation number of +6 in the compound (NH₄)₂CrO₄. The H in(NH₄)₂CrO₄ has an oxidation number of 1.
How does oxidation number work?The number of electrons that a specific atom or ion has either gained or lost in comparison to a neutral atom is known as the oxidation number. The oxidation number of a free element is always zero. Since the compound loses electrons when it is oxidized, the meaning was enlarged to include further reactions in which electrons are lost, regardless of the presence of oxygen.
A free element's oxidation number is always zero.
A monatomic ion's charge and oxidation number are the same.
Hydrogen (H) has an oxidation number of 1, but when mixed with fewer electronegative elements, it becomes negative.
In most compounds, oxygen (O) has an oxidation number of 2, but peroxides have a -1.
A Group 1 element's oxidation number in a compound is one.
In a compound, a Group 2 element's oxidation number is +2.
A Group 17 element in a binary compound has an oxidation number of 1.
In a neutral molecule, all of the atoms' oxidation numbers add up to zero.
the total of a polyatomic particle's oxidation numbers
a) CuCO₃
Let Cu be in the oxidation state "x."
As, the oxidation number of carbon is (+4) and oxidation number of oxygen is (-2).
so CuCO₃=0
Cu+C+3O=0
x+ 4+3(-2) =0
x+(-2) =0
x =+2
Cu has an oxidation state of (+2)
b) CH₄
As, the oxidation number of hydrogen is (+1)
so, CH₄ =0
C+4H =0
C +4 = 0
C= -4
C is in the oxidation state (-4)
c) IF
I should be in the "x" oxidation state.
In a binary compound, a Group 17 element's oxidation number is -1. Iodine and fluorine both fall under the 17th category.
IF = 0
I+F+0
I+(-1) =0
I= +1
I is in the (+1) state of oxidation.
d) CH₂Cl₂
As, the hydrogen oxidation number and oxidation number of a Group 17 element (Cl) in a binary compound is -1.
CH₂Cl₂ =0
C+2H+2Cl =0
C +2+(-2) =0
C = 0
e) SO₂
As, the oxidation number of oxygen is (-2).
SO₂ =0
S+2O = 0
S +(-4) =0
S = +4
s is in the (+4) state of oxidation.
f). (NH₄)₂CrO₄
(NH₄)₂CrO₄ is from (NH₄)⁺ + CrO₄²⁻
so
NH₄ =+1, since hydrogen is +1
N+ 4H = +1
N +4 =+1
N = -3
and
CrO₄ = -2
Cr +4 O = +2, since O = -2
Cr +4 (-2) = -2
Cr+ (-8) = -2
Cr = +6
learn more about oxidation number at
brainly.com/question/15167411
#SPJ4
How many molecules are in 0.400 moles of N2O5?
Answer:2.41 molecules
Explanation:
Answer:
2.41 molecules.
Explanation:
0.400 mol N2O5 contains 2.41 molecules N2O5.
1mole N2O5=6.022 × 1023molecules N2O5.
which of the following statements correctly describe bonding and intermolecular forces? select all that apply.
Intermolecular forces involve partial or small charges that are far apart and are relatively weak.
Bonding forces occur within the nucleus of the atom and are therefore strong
Covalent bonds are a type of intermolecular force since they are found in molecules.
Bonding forces are generally much stronger than intermolecular forces.
For a molecular substance, the strength of the intermolecular forces determines the physical properties of its phases.
Bonding forces are stronger than intermolecular forces, for molecular substance, strength of the intermolecular forces determines physical properties of phases, Intermolecular forces involve partial or small charges that are far apart and are relatively weak.
What can be said about the bonding and intermolecular forces?Intermolecular force is the force that mediates interaction between molecules including electromagnetic forces of attraction or repulsion which acts between atoms and neighboring particles (atoms or ions).
Bonding forces are the forces of attraction or repulsion which acts between neighboring particles like atoms, molecules or ions. Bonding force determines the elastic modulus (Young's modulus) of a material.
To know more about intermolecular forces, refer
https://brainly.com/question/2193457
#SPJ4
Draw the Lewis structure for NO3- including any valid resonance structures. Describe the resonance hybrid of the nitrate ion. The nitrate ion contains three N-O single bonds. The nitrate ion contains three N-O bonds that are equivalent to 123 bonds. The nitrate ion contains three N-O bonds that are equivalent to 113 bonds. The nitrate ion contains one N-O single bond and two N=O double bonds. The nitrate ion contains three N=O double bonds.
The chemical formula for nitrate is NO3. Nitrate is a polyatomic ion. Nitrates are the name for salts that contain this ion. Common nitrate ingredients in explosives and fertilisers. Water is a solvent for almost all inorganic nitrates. Bismuth oxynitrate is one type of insoluble nitrate.
learn more about NO3 here:
https://brainly.com/question/14146546
#SPJ4
a.) Using principles of atomic structure, explain why the atomic radius of Kr is less than the ionic radius of Se²⁻.
c.) Which structure, A, B, or C, minimizes the formal charges for each atom in SeO2F2? Justify your choice. (see image)
The boiling point of SeOF2 (diagram D) is less than the boiling point of SeOCl2 (diagram E).
f) Identify the type(s) of intermolecular force(s) that the two substances have in common. What about them?
g.) Explain the difference in boiling points based on the types and relative strengths of intermolecular forces.
a) The addition of two electrons to Se²⁻ increases the electron cloud
c) The compound B minimizes the formal charges
f) The structure D has the higher boiling point and the intermolecular force that the two molecules have in common is the dispersion forces.
g) There are strong dipole forces in D that does not exist in F
What is the atomic structure?We know that the atomic radius and the ionic radius are the parameters that does occur down the group and across the period. We know that down the group, the atomic radius would increase as we add more shells but across the period, the ionic radius would decrease as we add more nuclear charge.
Given the structures that have been shown, the structure B minimizes the nuclear charge as we can see that the octet of all the elements that are in the compound have been satisfied and there are no formal charges in the molecule.
Compound D has a higher boiling point than the compound E because the compound D is not symmetrical while the compound E is.
Learn more about atomic radius:https://brainly.com/question/29440273
#SPJ1
A coin collector has a bag of 50
pennies. What is weighted average
of a penny in the sample according
to the data?
Sample
Pre-1982
Post-1982
Abundance
(%)
36
64
Mass (g)
3.1
2.5
Weighted
Average (g)
[?]
The weighted average mass of the pennies is 2.716 g.
What is the average mass of a substance?The average mass of a substance is the average of the sum of the masses of all the substances.
Average mass = sum of all the masses / number of masses
The average mass is also known as the weighted average of the mass of a substance.
The average mass of a substance is used to express the average of al ]l the masses of a substance that occur in nature.
The average mass of the given pennies is calculated below as follows:
Sample A:
mass of sample = 3.1 g
percentage abundance = 36 %
Sample B:
mass of sample = 2.5 g
percentage abundance = 6 36 %
Weighted average mass = mass of A * % abundance + mass of B * % abundanceWeighted average mass = 3.1 g * 36% + 2.5 * 64%
Weighted average mass = 2.716 g
Learn more about average mass at: https://brainly.com/question/2378539
#SPJ1
calculate the concentration of an h3po4 solution if 25.00 ml is converted to na2hpo4 by 39.13 ml of 2.000 m naoh solution.
The concentration of an H₃PO₄ solution if 25.00 ml is converted to Na₂HPO₄ by 39.13 ml of 2.000 m NaOH solution is 3.12 M.
given that :
Concentration M1 = 2.00 M
volume V1 = 39.13 mL
Volume V2 = 25 mL
Concentration M2 = ?
concentration = moles / volume in L
moles = concentration × volume in L
moles = 2 × 0.03913
moles = 0.0782 mol
Concentration of H₃PO₄ = moles / volume in L
Concentration of H₃PO = 0.0782 / 0.025
Concentration of H₃PO₄ = 3.12 M
Thus, the concentration of an H₃PO₄ solution is 3.12 M
To learn more about concentration here
https://brainly.com/question/23160789
#SPJ4
8.1 Draw all possible elimination products that could be formed by the following reaction. There are 5 counting cis & trans isomers! HzC H2 (CH;)COH CHa CH3 HaC" Hz Hz CHa CH3
4-methyl 2-methylpropene, 1-pentene, and CHa CH3 are among the compounds.
How is cis to trans isomer converted?transisomer to cis-isomer Add trace iodine and heat the solution to 50 DEG C to convert it to the cis-isomer using a standard organic solvent (such as methanol, acetone, pyridine, or their deuterated reagent). In 1 to 10 minutes, the correspondence transisomer can be completely altered.
Which technique can be used to make trans alkenes?Alkynes are made to go through reduction with sodium in liquid ammonia in order to create trans alkenes. Alkyl halides produce: Alkyl halides are heated with alcoholic potash to produce alkenes.
To know more about cis-isomer visit:-
https://brainly.com/question/16289453
#SPJ
why is it important not to dilute the initial sample before it has been loaded
Chromatography column in order to minimize the matrix effect and prevent detector saturation.
Why is using a little amount of solvent critical when loading a sample into a column of chromatography?It is imperative that you just use a few drops of solvent to load the sample in this situation if you choose to load the column wet. If you utilize too much solvent, the loading solvent will obstruct the elution and, as a result, the mixture's separation.
What impact does dilution have?Dilution has the following effects: I As a solution is diluted, its conductivity rises. When diluted, the specific conductivity drops (as the number of ions decreases w.r.t. to volume). With dilution, the equivalent and molar conductivities rise.
To know more about dilution visit:-
https://brainly.com/question/28997625
#SPJ4
what is the total volume of gaseous products formed when 38.4 liters of butane () react completely according to the following reaction? (all gases are at the same temperature and pressure.)
The total volume of gaseous products formed is 799.68 L.
The reaction is given as :
2C₄H₁₀(g) + 13O₂(g) ----> 8CO₂(g) + 10H₂O(g)
22.4 L volume is occupied = 1 mol
38.4 L volume is occupied = (1 / 22.4 ) × 38.4
= 1.7 mol
2 moles of C₄H₁₀ = 8 moles CO₂
1.7 mol of C₄H₁₀ = (8 / 2) 1.7
= 27.2 mol CO₂
volume of CO₂ at STP = 27.2 × 22.4
= 609.28 L
2 moles of C₄H₁₀ = 10 moles of H₂O
1.7 mol of C₄H₁₀ = ( 10 / 2) 1.7
= 8.5 mol of H₂O
volume of H₂O = 8.5 × 22.4
= 190.4 L
total volume of gaseous product = 609.28 + 190.4 = 799.68 L
To learn more about volume here
https://brainly.com/question/15309621
#SPJ4
Why is CuSO_3 called copper (II) sulfite?
The Cu in the formula is where the Copper is found. The (II) is derived from the complex's copper's oxidation number. The SO3 ion is the source of sulfite.
Describe copper (Cu).
The chemical element copper (Cu) is a reddish, incredibly ductile metal belonging to Periodic Group 11 (Ib) that has an exceptional ability to conduct heat and electricity. In nature, copper can be found in its free metallic state.
What is the primary usage of copper?
Due to its ductility and excellent conductivity, copper is mostly used in electrical generators, home and auto wiring, and the wires in electronics like radios, TVs, computers, lighting, and motors.
What are the top 3 fascinating copper-related facts?
The 179,000 pounds of copper used to construct the Statue of Liberty. 400 pounds of copper are used in a typical home's electrical wiring, plumbing, and appliances. A typical automobile contains 50 pounds of copper. Every gold has a level of copper, even 24karat gold.
To know more about copper visit:
https://brainly.com/question/29549873
#SPJ4
Answer the questions based on the following structural diagram: QH [. The substance is a(n) 2. The substance was formed from a(n) 3. The IUPAC name of the parent aldehyde or ketone is
The substance is hemiacetal named 5 - hydroxyhexanal and was formed from an aldehyde.
Four groups—-OR, -OH, -R, and -H—are bonded to the carbon atom in the centre of the molecule known as hemiacetal. Acetal is an organic compound with a core carbon atom bound to two -OR groups, a -R group, and a -H group. The general formula for a hemiacetal is RHC(OH)OR'. Aldehyde has the generic formula RCHO. A functional group called an aldehyde has one carbonyl group, one hydrogen atom, and one R group linked to the carbonyl atom. Any alkyl group, such as aliphatic, aromatic, etc., can serve as the R.
To learn more about hemiacetal click here:
https://brainly.com/question/28030326
#SPJ4
nuclear decay occurs according to first-order kinetics. a nuclide decays in 3.40 days from 45.0 g to 12.1 g. what is the rate constant for the nuclide?
Its rate constant again for nuclide is 0.388 days per one. First-order kinetics governs how nuclear decay happens. At 45.0 g down 12.1 g, a nuclide degrades every 3.40 days.
How do you define a nuclide?Nuclide, also known as nuclear species, is an atom species that is identified by the amount of protons, neutrons, and the energetic state of the nucleus. As a result, a nuclide is identified by its quantity (A) and atomic number (Z).
What is an example of a nuclide?A similar options is a type of atom that has a certain ratio of protons to neutrons in its nucleus, such as carbon-13's 6 protons to 7 neutrons.
to know more about nuclide visit:
https://brainly.com/question/9826865
#SPJ4
What is the formula for copper (II) nitrite? CuzNz Cu(NOz)2 Cuz(NO3h2 Cuz(NO2)2
CuN2O4 | Copper Nitrite | PubChem CuNO2 | Copper Nitrite | ChemSpider Please contact your local healthcare facility or the World Health Organization for medical information on Covid-19.
Copper (II) Nitrate's chemical name is Cu
2. Similar to that, this anhydrous salt's structure is made up of 2 anions, NO3-, and 1 cation, Cu2+. The substance manifests up to 5 distinct hydrate forms. Cu is trihydrated as Cu(NO3)2, and it is pentahydrated as Cu. 2.
The reaction you were provided explains the thermal breakdown of copper(II) nitrate, Cu
2 . Decomposition reactions often have one reactant and several products, which makes them easy to spot.
An oxidation process occurs when copper reacts with oxygen to generate copper oxide.
To learn more about Copper Nitrite please click on below link
https://brainly.com/question/14913187
#SPJ4
The main lipid components in cellular membranes are: waxes. oils: glycerophospholipids fats: fatty acids: Question 12 1 pts Which of the following lipids will give a single molecule of fatty acid when hydrolyzed? elycerophospholipid wax steroid petroleum
The main lipid components in cellular membranes are glycerophospholipids fats
The major structural lipid in cellular membrane
are. Glycerophospholipids.
phosphatidylcholine (Pt cl cho)
phosphatidic acid (PA) etc.
correct option is third . Glycerophospholipids.
Fatty acid diglycerides with a phosphatidyl ester linked to the terminal carbon are known as glycerophospholipids (GPLs) (see Fig. 1). Ethanolamine, choline, serine, or inositol make up the majority of the terminal ester groups (X). Highly amphiphilic GPLs are typically found in cellular or vesicle membranes. The GPL mixes, which mostly contain phosphotidyl choline, are frequently referred to as lecithin in commercial contexts. Lecithins are surface active substances that are utilised in food as emulsifiers to change viscosity and crystallisation qualities. In addition to these commercial applications, it is used as an emulsifying agent in pesticides, cosmetics, paints, plastics, leather, and textiles.
learn more about glycerophospholipids:
brainly.com/question/28437379
#SPJ4
how many grams of sodium lactate are needed to prepare 11.5 liters of ringer's lactate?
To create 11.5 litres of Ringer's lactate, 4.19 gram of sodium lactate is required per the question.
What use does sodium serve in chemistry?In the some nuclear reactor, sodium is employed as a heat exchanger. It is also utilized as a reactant in the chemical sector. In contrast, sodium salts are more useful than sodium itself. Sodium chloride is the most prevalent sodium compound (common salt).
Briefing:Concentration of NaC₃H₅O₃ = 3.25mM
= 3.25*10⁻³M
Volume = 11.5 litre
Molar mass of NaC₃H₅O₃ = 112g/mol
No. of moles of NaC₃H₅O₃
= Concentration of NaC₃H₅O₃ * volume
= 3.25*10⁻³ * 11.5
= 37.38*10⁻³
=3.738*10⁻²
0.037 mol
Therefore,
Mass of NaC₃H₅O₃
= No. of moles of NaC₃H₅O₃ * Molar mass of NaC₃H₅O₃
= 0.037*112
= 4.19 grams
Hence, the required mass of NaC₃H₅O₃ is 4.19 g
To know more about Sodium visit:
https://brainly.com/question/29327783
#SPJ4
The complete question is-
An aqueous solution known as Ringer's lactate is administered intravenously to trauma victims suffering from blood loss or severe burns. The solution contains the chloride salts of sodium, potassium, and calcium and is also 3.25 mM in sodium lactate (NaC₃H₅O₃).
How many grams of sodium lactate are needed to prepare 11.5 liters of Ringer's lactate?
Balance the following redox reaction under acidic aqueous conditions using the smallest whole-number coefficients possible. On which side does H (aq) appear, and what is its coefficient? 79. MnO4(aq)+(aą) 1(aq) +Mn2 (aq) a. left, 16 b. right, 16 c. left, 8 d. right, 8 e. right, 4
H+ appear on left hand side and the coefficient is 16 in the balanced redox reaction under acidic aqueous conditions.
What is redox reaction?
Redox reactions, also referred to as oxidation-reduction processes, are reactions in which electrons are transferred from one species to another. An oxidized species is one that has lost electrons, whereas a reduced species has gained electrons.
The balanced redox reaction under acidic aqueous conditions using the smallest whole-number coefficients is written as
[tex]2MnO+16H^{+} +10I^{-}[/tex] → [tex]2Mn2^{+} + 8H_{2} O + 5I^{2}[/tex]
Therefore, the H+ is present on left side with a coefficient of 16 in the balanced redox reaction under acidic aqueous conditions.
To learn more about redox reaction from the given link.
https://brainly.com/question/21851295
#SPJ4
How many electrons does a selenide ion (Se2- ) have?
Total Number of electrons that is present in selenide (se2-) ion is thirty six (36).
Selenium is a non-metal chemical element belonging to group sixteen(16) of the periodic table. This group is also called chalcogens. Along with selenium group sixteen also have sulfur, oxygen, tellurium, oxygen, polonium, livermium. Atomic number of selenium element is thirty four (34) , this means there are thirty four electrons and protons are there in a neutral element. Chemical symbol of selenium is se. Selenide (se2-) ion forms when a neutral selenium element accepts two electrons. Hence selenide (se2-) will have totally thirty six electrons. Since the number of electrons is two more than the proton charge is two negative charges.
To know more about Elements -
https://brainly.com/question/14347616
#SPJ4
9 The correct name for the compound Pb3(PO4)4 is (abzi 2) Lead (IV) phosphide Lead phosphide lead monophosphours lead (IV) phosphate
The correct name for the compound Pb3(PO4)4 is lead (IV) phosphate. Chemical substances known as compounds are made up of two or more elements that are chemically bonded together in a certain proportion.
A compound is created when two or more components join chemically in a predetermined mass ratio. A compound is a substance made up of two or more different types of elements together in a specific proportion of their atoms. Some of the particular qualities of the constituent parts are lost during fusion, while the newly created molecule acquires new characteristics. Chemical Formula: The chemical formula identifies a compound. The ratios of atoms that make up a certain chemical molecule are symbolically represented in a chemical formula. Water's chemical formula, H2O, indicates that one molecule of water is made up of two hydrogen atoms and one oxygen atom. One sodium atom and one chlorine atom unite to make a single molecule of common salt, as shown by its chemical formula, NaCl. Salts and molecular compounds are the two categories into which compounds can be divided. Covalent bonds hold the atoms together in molecular molecules. Ionic bonds hold it together in salts.
To know more about compound please refer: https://brainly.com/question/13516179
#SPJ4
a certain radioisotope has a half life of 10.8 days. what percentage of an initial sample of this isotope remains after 34 days
You could easily draw this out by dividing the percentage by 2 every 7.45 days until you reached 35 days if the elapsed time (35 days) were a whole-number multiple of the half-life (7.45 days).
Sadly, it isn't the case, thus you must use the following formula:
At=Ao⋅(1/2)pow(t/t*1/2)
In this case:
At=100%⋅(12)pow(35 days/7.45 days)
At=100%⋅(12)pow(4.700
At=100%*0.038
At=3.8%
How long is a radioisotope stable for?The amount of time needed for a radioisotope to decay by half is called its radioactive half-life. Most radioactivity will be gone in a few days if an isotope has a half-life that is only a few hours or less.
To know more about radioisotope visit:-
https://brainly.com/question/13076859
#SPJ4
which of the following statements correctly describe dipole-dipole forces? select all that apply.
Dipole-dipole forces are the forces of attraction between two polar molecules.
Dipole-dipole, forces arise from the attraction between the like poles on two adjacent molecules.
Any molecule that contains polar covalent bonds will exhibit dipole-dipole forces.
The larger the dipole moment the greater the dipole-dipole force between two molecules.
Dipole-dipole forces are forces of attraction between two polar molecules. Larger the dipole moment, greater is the dipole-dipole force between two molecules.
What is meant by dipole-dipole forces?Attractive forces between the positive end of one polar molecule and the negative end of another polar molecule is called dipole-dipole forces. Dipole-dipole forces have strengths that from 5 kJ to 20 kJ per mole.
As polar molecules have a positive and negative charge ends, positive charge end of a molecule attracts the negative end of adjacent molecule with the same or different kind of molecule. This attraction between two polar molecules is called dipole-dipole interaction.
To know more about dipole - dipole forces, refer
https://brainly.com/question/9279925
#SPJ4
how many molecules of co 2 can be formed when three molecules of c 4h {10} are mixed with thirteen molecules of o 2 and the combustion reaction leads to the formation of co 2 and h 2o?
2C4H10 + 13O2 → 8CO2 + 10 H20
6.022 ×[tex]10^{24}[/tex] molecules of H2O
Moles of C4H10 = 3 moles of O2 = 13
O2 is limiting reagent
Moles of H2O = 10/13 × moles of O2
= 10/13 × 13 = 10 MOL H2O = 6.022 ×[tex]10^{24}[/tex] molecules of H2O
The tiniest component of an object that possesses all of its physical and chemical characteristics. The number of atoms that make up a molecule might vary. If they do, the additional atoms may be of the same type (for example, an oxygen molecule contains two oxygen atoms) or distinct types (a water molecule has two hydrogen atoms and one oxygen atom). Many thousands of atoms can make up biological compounds like proteins and DNA.
Molecular oxygen can be found in nature. To create dioxygen, often known as O2, two oxygen atoms form a covalent double bond. As a molecule, oxygen is typically present. Dioxygen is its name
Learn more about molecules here:
https://brainly.com/question/19556990
#SPJ4
the electron-group arrangement around a central atom is defined by the number of –electron groups. the molecular shape is defined by the relative positions of the around the central atom. two species may have the same electron-group arrangement but have different molecular shapes.
The electron-group arrangement of two species could be identical. Valence Atoms can take on several molecular forms.
Why does an atom have a valence?The electrons located in an atom's outermost shell, or energy level, are known as valence electrons. For instance, oxygen contains two valence electrons in the 2s subshell and four in the 2p subshell, for a total of six valence electrons. The oxygen's valence electron configuration is 2s22p4.
What is the best way to determine an atom's valence?The quantity of valence electrons for neutral atoms is equal to the number of the primary group of the atom. From an element's column on the periodic table, one can determine the major group number. In group 4 and with 4 valence electrons, for instance, is carbon.
To know more about Valence Atoms visit:
https://brainly.com/question/13993867
#SPJ4
