Amonghalogens the correctorder of amountof energyreleasedin electron gain (electron gainenthalpy ) is :

Amonghalogens the correctorder of amountof energyreleasedin electron g

1.	Amonghalogens the correctorder of amountof energyreleasedin electron gain (electron gainenthalpy ) is :
Answer» `F gt C1 gt BR gt I` `F gt C1 LT Br gt I` `F lt C1 gt Br I` ` F lt C1 lt Be lt I` Solution :As we move from C1 to I theelectrongainenthalpy(i.e.,energy in electron gain )becomes less and lessnegative due to a corresponding increases in theatomic size. Howeverthe electron gainenthalpy of Fis less NEGATIVE than that of C1due to its small size.Thus , the negativeelectron gain ENTHALPY follows the ORDER`: F lt C1 gt Br gt I` i.e.,option( c)iscorrect.