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The correct order of electron affinity is :

$ (a)\;F > Cl > Br \\(b)\; F > Cl < Br \\ (c)\;F < Cl > Br \\ (d)\;F < Cl < Br $

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Solution :
In halogens, the electron affinity increases from F to Cl and then decreases to I as the atomic size increases. F has less electron affinity than Cl due to very small size.
The order is: F < Cl > Br
But still the electron affinity of F is greater than those of Br
answered Mar 11, 2014 by meena.p
edited Nov 20, 2017 by meena.p

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