Select corrcet orders for corresponding property as indicated in bracket for the following .

Options

A. `NH_(3) gt BiH_(3) gt SbH_(3) gt AsH_(3) gt PH_(3)` (Boiling point)
B. `H_(2)O gtH_(2) Te gt H_(2) Se gt H_S(2)` (Boiling point)
C. `NH_(3) gt PH_(3) gt AsH_(3) gt SbH_(3)` (Basic character)
D. `H_(2)O lt H_(2)S lt H_(2) Se lt H_(2)` Te (Acidic character)

Answer

B, C, D

Explanation

(a) is wrong and the correct order is
`BiH gt SbH_(3) gt AsH_(3) gt PH_(3)`
(b) is correct
(c ) is correct Basic character of hydrides of group `15` decreases down the group Smaller the size higher the `lp e^(-') s` density and more basic
(d) is correct Larger the size of central atom weaker the `M-H` bond and more acidic .