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Which of the following options are not i...

Which of the following options are not in accordance with the property mentioned against them ?

A

`F_(2) gt Cl_(2) gt Br_(2) gt I_(2)" "`Oxidising power

B

`MI gt MBr gt MCl gt MF" "`Ionic character of metal halide

C

`F_(2) gt Cl_(2) gt Br_(2) gt I_(2)" "` Bond dissociation enthalpy

D

`HI lt HBr lt HCl lt HF" "` Hydrogen-halogen bond strength

Text Solution

Verified by Experts

The correct Answer is:
B, C
Ionic character increases as the electronegativity of halogen increases, i.e., MI lt MBr lt MCl lt MF. Due to small size, the lone pair of electrons on the two F atoms repel each other and hence bond dissociation enthalpy of `F_(2)` is lower than that of `Cl_(2) and Br_(2)`. The actual order is : `Cl_(2) gt Br_(2) gt F_(2) gt I_(2)`. Thus, options (b) and (c) are not correct.
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