Question

What is atomicity? Give two examples for monoatomic and diatomic molecules​

Answer 1

Answer:

Atomicity is defined as the number of molecules present in an element

Monatomic – composed of one atom e.g. He, Ne, Ar, Kr (all noble gases are monatomic) Diatomic – composed of two atoms e.g. H2 , N2 , O2 , F2 , Cl2 (all halogens are usually diatomic) Triatomic – composed of three atoms e.g. O. Polyatomic – composed of three or more atoms e.g. P4 , S.