Which of the following observations can be explained on the basis of hydrogen bonding ?
(i) H- F has higher boiling point than other halogen acids.
(ii) `H_(2)` O has highest boiling point among hydrides of group 16 elements.
(iii) `NH_(3)` has lower boiling point than `PH_(3)`.

Options

A. (i),(ii) and (iii)
B. (i) nad (iii)
C. (ii) and (iii)
D. (i) and (ii)

Answer

d

Explanation

Satement (iii) is not true since ` NH_(3)` has higher
boiling point than `PH_(3)` due to hydrogen bonding .