(a) Account for the following :
(i) Acidic character increases from `H_(2)O` to `H_(2)`Te.
(ii) `F_(2)` is more reactive than `ClF_(3)` , whereas `ClF_(3)` is more reactive than ` Cl_(2)`.
(b) Draw the structure of (i) `XeF_(2)`, (ii) `XeOF_(4)`
.

Explanation

(a) (i) Due to decrease in bond dissociation enthalpy of E-H
(ii) Due to lower bond dissociation enthalpy of F-F bond than Cl-F bond whereas Cl–Cl bond has higher bond dissociation enthalpy than Cl-F bond.

(c) `2F_(2)(g) + 2H_(2)O(l) rarr 4H^(+)(aq) + 4F^(–)(aq) + O_(2)(g)`