State reasons for each of the following happenings:
(i) Sulphur vapour exhibits some paramagnetism.
(ii) Unlike phosphorus nitrogen shows little tendency for catenation.

(i) Sulphur vapours (S₂) show some paramagnetism this is because in vapour state sulphur has two unpaired electron, like O₂ due to presence of unpaired electron.

(ii) Nitrogen forms multiple bonds whereas phosphorus does not therefore, nitrogen shows little tendency for catenation. N—N bonds is weaker than P—P bond.