Which one of the following arrangements does not give the correct picture of the trends indicated against it ?A. `F_(2) gt Cl_(2) gt Br_(2) gt I_(2)` Oxidising powerB. `F_(2), Cl_(2) gt Br_(2) gt I_(2)` Electron gain enthaplyC. `F_(2) gt Cl_(2) gt Br_(2) gt I_(2)`D. `F_(2) gt Cl_(2) gt Br_(2) gt I_(2)` Electronegtivity

Which one of the following arrangements does not give the correct pict

1.	Which one of the following arrangements does not give the correct picture of the trends indicated against it ?A. `F_(2) gt Cl_(2) gt Br_(2) gt I_(2)` Oxidising powerB. `F_(2), Cl_(2) gt Br_(2) gt I_(2)` Electron gain enthaplyC. `F_(2) gt Cl_(2) gt Br_(2) gt I_(2)`D. `F_(2) gt Cl_(2) gt Br_(2) gt I_(2)` Electronegtivity
Answer» Correct Answer - C Generally as the size of the atom increases bond dissociation energy decreases, so in halogens `I_(2)` have lowest bond dissociation energy, but the bond dissocitation energy of chlorine is higher than that of fluorine because in fluorine there is a greater repulsion between non-bonding electrons `(2p)`. Hence, the order of bond dissociation energy is `{:(,Cl_(2),gt,F_(2),gt,Br_(2),gt,I_(2)),(underset("energy" (kJ//mol))("Bond dissociation"),243,,153,,193,,151):}`

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