Question

Only for 12th class
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Answer 1

Ammonia(NH3) is a stronger base than phosphine(PH3) because the electron density on the nitrogen atom is higher than that on Phosphate atom due to smaller size of nitrogen atom. Therefore, lone electron pair on nitrogen atom is more easily available.

Answer 2

Answer:

(1) Ammonia(NH3) is a stronger base than phosphine(PH3) because the electron density on the nitrogen atom is higher than that on Phosphate atom due to smaller size of nitrogen atom. Therefore, lone electron pair on nitrogen atom is more easily available.

2)

Sulphur in vapour state exhibits paramagnetic behaviour, why ... In vapour state, Sulphur partly exists as S2 molecule, which has two unpaired electrons in antibinding pie orbitals, just like the O2 molecule. Hence, it exhibits paramagnetism. Because in vapour state it exists as S2 molecule and has 2 unpaired electrons in antibonding pi orbital and hence exhibit paramagnetism.