Which one of the following arrangements does not give the correct picture of the trends indicated against it ?

Options

A. `F_(2) gt Cl_(2) gt Br_(2) gt I_(2)` Bond dissoviation energy
B. `F_(2) gt Cl_(2) gt Br_(2) gt I_(2)` Electronegativity
C. `F_(2) gt Cl_(2) gt Br_(2) gt I_(2)` Oxidizing power
D. `F_(2) gt Cl_(2) gt Br_(2) gt I_(2)` Electron gain enthalpy

Answer

A

Explanation

In case of diatomic molecules `(X_(2))` of halogens the bond dissociation energy decreases in the order :
`Cl_(2)gt Br_(2) gt F_(2) gt I_(2)`
The oxidizing power, electronegativity and reactivity decrease in the following order :
`F_(2) gt Cl_(2) gt Br_(2) gt I_(2)`
Electron gain enthalpy fo halogens decreases in the following order :
`Cl_(2)gt F_(2) gt Br_(2) gt I_(2)`
The low value of electron gain enthalpy of fluorine is due to small size of fluorine atom.