Chlorine and Diatomic Molecules

The video explains the diatomic nature of chlorine gas (Cl2) and how it differs from chlorine in compounds like HCl. It details the calculation of the number of chlorine atoms in one mole of Cl2 using Avogadro's number, resulting in 12.04 x 10^23 atoms. The video concludes with a summary of these concepts.

Why does chlorine exist as Cl2 in its gaseous form?

• Because it is a diatomic molecule.

• Because it is a noble gas.

• Because it is a metal.

• Because it is a compound.

What is the molecular formula for chlorine gas?

• Cl

• HCl

• Cl2

• ClO2

In the context of the video, what does the term 'diatomic' refer to?

• A molecule composed of two different elements.

• A molecule with two bonds.

• A molecule composed of two identical atoms.

• A molecule with two charges.

What is the significance of Avogadro's number in chemistry?

• It is used to calculate the volume of gases.

• It is used to measure temperature.

• It is used to determine the number of atoms or molecules in a mole.

• It is used to find the density of substances.

How many chlorine atoms are present in one mole of Cl2?

• 12.04 x 10^23

• 3.01 x 10^23

• 6.02 x 10^23

• 24.08 x 10^23