Question

Explain monoatomic, diatomic, and triatomic molecules.

Answer 1

The number of atoms constituting a molecule is known as its atomicity.
Depending upon the number of atoms, molecules can be:

Monoatomic- A molecule which contains only one atom. Example: Helium, neon, etc. [1 mark]

Diatomic- A molecule which contains two atoms. Example: Hydrogen molecule, nitrogen molecule, etc. [1 mark]

Triatomic- A molecule which contains three atoms. Example: Carbon dioxide, water, etc. [1 mark]

Molecules containing more than 3 atoms are considered as polyatomic molecules.