Account for the following :
(i) `NH_(3)` is a stronger base than `PH_(3)`
(ii) Sulphur has a greater tendency for catention than oxygen.
(iii) Bond dissociation energy of `F_(2)` is less than that of `Cl_(2)`.
(OR)
Explain the following situations :
(i) In the structure of `HNO_(3)` moleucle, the `N-O` bond (121 pm) is shorter than the ` N-OH` bond (140 pm).
(ii) `SF_(4)` is easily hydrolysed whereas `SF_(6)` is not easily hydrolysed.
(iii) `XeF_(2)` has a straight linear structure and not a bent angular structure.