Question

1. Define atomicity.
2. What will be the atomicity of ozone and ammonia?

Answer 1

1. Atomicity is the total number of atoms present in one molecule of an element or a substance.

2. The chemical compound ozone ${(O}_3)$ is composed of 3 oxygen atoms. Therefore the atomicity of ozone is three.
The chemical formula of ammonia is ${NH}_3$ in which there are 3 Hydrogen atoms and 1 Nitrogen atom. Therefore the atomicity ammonia is four.