Question

the number of atom present in one molecule pf an element or a compound is called its​

Answer 1

Answer:

Atomicity

Explanation:

Atomicity is defined as the total number of atoms that constitute a molecule. For example, each molecule of oxygen (O2) is composed of two oxygen atoms. So atomicity of oxygen is 2.In older contexts, the term atomicity is sometimes used in the same sense as valency.