Elements are organized in the....... by increasing atomic number

Answers

Answer 1

The periodic table is a tool used by chemists to organize the elements based on their properties and characteristics. The table is arranged in rows and columns, with the rows being called periods and the columns called groups. The elements in the table are organized in order of increasing atomic number.

Atomic number refers to the number of protons in the nucleus of an atom. Elements with the same number of protons have similar properties, which is why they are grouped together in the periodic table. The number of protons also determines an element's placement in the table. Elements with fewer protons are located on the left side of the table, while those with more protons are located on the right side.
The periodic table also has a unique arrangement of blocks, which are based on the electron configuration of the elements. The s-block elements are located on the left side of the table, followed by the p-block elements on the right. The d-block elements are located in the middle, and the f-block elements are located at the bottom of the table.
The periodic table is a powerful tool for understanding the behavior of the elements, and it has been instrumental in the development of modern chemistry. Its organization by increasing atomic number allows for easy comparison of the elements and their properties, which has led to many important discoveries and advancements in the field of chemistry.

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Related Questions

A gas at a pressure of 2.0 atm occupies a volume of 20 liters. If the volume is decreased to 10 liters and the pressure is increased to 4.0 atm, what will be the final volume of the gas?

Answers

The initial condition of the gas can be expressed using the combined gas law:

P1V1 / T1 = P2V2 / T2

where P1 = 2.0 atm, V1 = 20 L, and T1 is the initial temperature (which we will assume remains constant).

If the volume is decreased to 10 L and the pressure is increased to 4.0 atm, the new conditions can be expressed as:

P2 = 4.0 atm, V2 = ?, and T2 = T1

We can rearrange the combined gas law to solve for V2:

V2 = (P1V1T2) / (P2T1)

Plugging in the given values, we get:

V2 = (2.0 atm x 20 L x T1) / (4.0 atm x T1) = 10 L

Therefore, the final volume of the gas is 10 liters.

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Which of the these is a balanced chemical equation?

Question 18 options:

H2O + CHO2 → H2CO3

H2O + CO2 → H2CO3

3H2O + 2CO2 → 2H2CO3

2H2O + 2CO2 → H4CO4

Answers

Answer:

The balanced chemical equation is:

3H2O + 2CO2 → 2H2CO3

Explanation:

Given:
180.0 mL chloric acid (HCIO3)
440.0 mL of 1.75 M strontium hydroxide (Sr(OH)2)
Wanted: [HCIO3] necessary to neutralize Sr(OH)?

Answers

The molarity of the 180.0 mL chloric acid, HClO₃ solution needed to neutralize the 440.0 mL of 1.75 M strontium hydroxide, Sr(OH)₂ is 8.56 M

How do i determine the molarity of the chloric acid, HClO₃?

We'll begin by writing the balanced equation for the reaction. This is given below:

2HClO₃ + Sr(OH)₂ —> Sr(ClO₃)₂ + 2H₂O

The mole ratio of the acid, HClO₃ (nA) = 2The mole ratio of the base, Sr(OH)₂ (nB) = 1Volume of Sr(OH)₂ (Vb) = 440.0 mLMolarity of Sr(OH)₂ (Mb) = 1.75 M Volume of HClO₃ (Va) = 180.0 mLMolarity of HClO₃ (Ma) =?

The molarity of the chloric acid, HClO₃ solution necessary can be obtained as follow:

MaVa / MbVb = nA / nB

(Ma × 180) / (1.75 × 440) = 2

Cross multiply

Ma × 180 = 1.75 × 440 × 2

Divide both side by 180

Ma = (1.75 × 440 × 2) / 180

Ma = 8.56 M

Thus, we can conclude that the molarity of the chloric acid, HClO₃ solution is 8.56 M

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Complete question:

Given that 180.0 mL chloric acid (HCIO3) reacted with 440.0 mL of 1.75 M strontium hydroxide (Sr(OH)2). What is the molarity of HCIO3 necessary to neutralize Sr(OH)?

Wanted: [HCIO3] necessary to neutralize Sr(OH)?

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