Question

Solve this:
Among the hydrides of Group-15 elements, which have the
(a) lowest boiling point ?
(b) maximum basic character ?
(c) highest bond angle ?
(d) maximum reducing character ?

Answer 1

Dear student,

a) Phosphine will be having lowest boiling point.
d) The reducing power of hydrides increases down the group so BiH₃ will have highest reducing nature.
b) The basic character decreases down the group due to increase in central atom size. So BiH₃ will be_​ leasr basic.
c) Due to the presence of lone pair, the bond angle in NH₃ is less than the normal tetrahedral angle. It has been found to be 107^o. and it is highest bond angle.

Regards