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Which of the following orders of electron affinities of halogen is correct?

$\begin{array}{1 1}F < Cl < Br\\F > Cl > Br\\F > Cl < Br\\F < Cl > Br\end{array} $

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Answer : F < Cl > Br
Because of small size (electrons held in small volume),the electron affinity of F is smaller than Cl,which,in turn,has higher electron affinity than Br.
answered Jul 28, 2014 by sreemathi.v

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