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Question

Which of the following elements has the maximum electron affinity?

A
I
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B
Br
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C
Cl
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D
F
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Solution

The correct option is C Cl
Among the halogens the electron affinity value of F should be maximum. But due to small size there is inter-electronic repulsion thus, there is difficulty in entry of new electrons. Thus, the electron affinity value is slightly lower than chlorine and the order is I<Br<F<Cl.

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