Question

Among the hydrides of group 15 elements ,which have the (1) lowest boiling point ? (2) maximum basic character? (3) highest bond angle ? (4)maximum reducing character

Answer 1

a) PH3 (b) NH3 (c) NH3 (d) BiH3

Answer 2

Answer:

1) AsH3 2)BiH3 3)NH3 4)BiH3

Explanation:

1) order of BP = BiH3>SbH3>NH3>PH3>AsH3

2) basicity increases down the group

3) bond angle decrease down the group