Which one of the following arrangement does not truly represent the property indicated against it ?

Options

A. `Br_(2) lt Cl_(2)lt F_(2)` Oxidising power
B. `Br_(2) lt Cl_(2) lt F_(2)` Electronegativity
C. `Br_(2) lt F_(2) lt Cl_(2)` Electron affinity
D. `Br_(2) lt Cl_(2) lt F_(2)` Bond energy

Answer

D

Explanation

Shond dissociation enthalphy of halogen follows the sequnecy as
`Cl_(2) gt Br gt F_(2) gt I_(2)`
Enthalpy of dissociation decreasss as the bond distance increases from `F_(2)` to `I_(2)` due to a corresponding increases in size of the atom as one move down the group from F to i. However, the F.F bond dissociation enthalpy is smaller than that of `Cl-Cl` (even than that of Br-Br) because repulsion between the lons pairs of electrons are very large.