Amoung the hydrides of Group - 15 elements , which have the :
(a) lowest boiling point ? `" "` (ii) maximum basic character ?
(iii) highest bond angle ? `" " ` (d) maximum reducing character ?

Explanation

(a) `PH_(3)` is having the lowest boiling point .
(b) `NH_(3)` is having maximum basic character .
(c) `NH_(3) (107.8^(@))` is having highest bond angle .
(d) `BiH_(3)` is having maximum reducing character.