The decreasing order of electron affinity of $F, C l,$ and $B r$ is:

C l > F > B r

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F > B r > C l

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B r > F > C l

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None of these

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Solution

The correct option is B $C l > F > B r$
The decreasing order of electron affinity of $F, C l,$ and $B r$ is $C l$ > $F$ > $B r$
In general, the electron affinity decreases down the group but the electron affinity for chlorine is more than that for fluorine, because in $F$ , due to the small size of the atom, the electron is already crowded. The entry which leads to the absorption of some energy, so the energy released is less than what would be expected.

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Similar questions

Q. The decreasing order of electron affinity of

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The decreasing order of electron affinity of F,Cl, and Br is:

The decreasing order of electron affinity of $F, C l,$ and $B r$ is: