State whether the following statement is true or false:
The atomicity of phosphorus is $5$ and that of sulphur is $6$.

State whether the following statement is true or false:
Oxygen molecules exist in the form of three molecules as $O_{2}$,$O_{3}$,and $O_{4}$.

Classify each of the following on the basis of their atomicity:
$(a) F_2$
$(b) NO_2$
$(c) N_2O$
$(d) C_2H_6$
$(e) P_4$
$(f) H_2O_2$
$(g) P_4O_{10}$
$(h) O_3$
$(i) HCl$
$(j) CH_4$
$(k) He$
$(l) Ag$

What is meant by atomicity? How many different types of molecules are known on the basis of atomicity?

Find the total number of atoms present in one $SO_{4}^{2-}$ ion.

Determine the atomicity of the following molecules:
$(i)$ $H_{2}SO_{4}$
$(ii)$ $CCl_{4}$