Q21 of 49 Page 20

Classify each of the following on the basis of their atomicity.

(a) F2 (b) NO2


(c) N2O (d) C2H6


(e) P4 (f) H2O2


(g) P4O10 (h) O3


(i) HCl (j) CH4


(k) He (l) Ag

The number of atoms constituting a molecule is known as its atomicity. On the basis of atomicity, the elements may be classified as follows:































Monoatomic



Diatomic



Triatomic



Tetratomic



Polyatomic



He



F2



N2O



P4



C2H6



Ag



HCl



NO2



H2O2



CH4





O3






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