MCQ
$XeF_6$ dissolves in anhydrous $HF$ to give a good conducting solution which contains:
- A$H^+$ and $XeF_7^-$ ion
- ✓$HF_2^-$ and $XeF_5^+$ ions
- C$HXeF_6^+$ and $F^-$ ions
- Dnone of these
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$H _{2} F _{2( g )} \rightarrow H _{2( g )}+ F _{2( g )}$
$\Delta U =-59.6\,kJ\,mol ^{-1} \text { at } 27^{\circ}\,C$.
The enthalpy change for the above reaction is (-) $kJ mol ^{-1}$ [nearest integer] Given : $R =8.314\,JK ^{-1}\,mol ^{-1}$
$(iii)$ Ionisation energy $(iv)$ Metallic character