Which of the following options are not accordance with the property mentioned against them?
(a) `F_(2)gtCl_(2)gtBr_(2)gtI_(2)` Oxodising power
(b) `MIgtMBrgtMClgtMF` Ionic character of metal halide
(c ) `F_(2)gtCl_(2)gtBr_(2)gtI_(2)` Bond dissociation enthalphy
(d) `HIltHBrltHClltHF` Hydrogen - halogen bond strength

Answer

B, C

Explanation

`F_(2)gtCl_(2)gtBr_(2)gtI_(2)` As ability to gain electron increases oxidising property increases. Here, F is the most electronegative element having highest value of SRP hence it has highest oxidising power.
`MIgtMBrgtMClgtMF`
This is the incorrect order of ionic character of metal halide.
Correct order can be written as
`MIltMBrltMClltMF`
As electronegativity difference between metal and halogen increases ionic character increases.
`F_(2)gtCl_(2)gtBr_(2)gtI_(2)`
This is incorrect order of bond dissociation energy . Correct order is `Cl_(2)gtBr_(2)gtI_(2)` due to electronic repulsion among lone pairs in `F_(2)` molecule.