Assign a reason for each of the following statements:(i) Ammonia is a stronger base than phosphine.(ii) Sulphur in vapour state exhibits a paramagnetic behaviour.

Assign a reason for each of the following statements:(i) Ammonia is a

1.	Assign a reason for each of the following statements:(i) Ammonia is a stronger base than phosphine.(ii) Sulphur in vapour state exhibits a paramagnetic behaviour.
Answer» (i) As the atomic size of nitrogen is smaller than phosphorus, therefore electron density on nitrogen atom is higher than that on phosphorus atom. Consequently the tendency of N in NH₃to donate its lone pair of electrons is much higher than that of P in PH₃ . Thus, ammonia is stronger base than phosphine. (ii) In vapour state sulphur partly exists as S₂molecule which has two unpaired electrons in the antibonding π* orbitals like O₂and, hence exhibits paramagnetic behaviour.

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Assign a reason for each of the following statements:(i) Ammonia is a stronger base than phosphine.(ii) Sulphur in vapour state exhibits a paramagnetic behaviour.

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