Explain the following:- (i) Nitrogen exists as diatomic molecule wher

1.	Explain the following:- (i) Nitrogen exists as diatomic molecule whereas phosphorous exists as tetra atomic molecule.(ii) NF3 is an exothermic compound but NCl3 is an endothermic compound.
Answer» (i) N-N single bond is very weak due to its small size (ii) F is highly electronegative and N-F bond energy is higher than N-Cl bond energy.

Explain the following:- (i) Nitrogen exists as diatomic molecule whereas phosphorous exists as tetra atomic molecule.(ii) NF3 is an exothermic compound but NCl3 is an endothermic compound.

Answer»

(i) N-N single bond is very weak due to its small size

(ii) F is highly electronegative and N-F bond energy is higher than N-Cl bond energy.