The correct order of increasing electron affi | vedclass

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Question

(A) Electron affinity generally increases across a period and decreases down a group. However,due to the small size of $F$ and $O$ atoms,the incoming

Vedclass · Accepted Answer

$O < S < F < Cl$

Vedclass · Answer

(A) Electron affinity generally increases across a period and decreases down a group. However,due to the small size of $F$ and $O$ atoms,the incoming electron experiences significant inter-electronic repulsion,making their electron affinity values lower than those of the elements below them in the same group ($Cl$ and $S$ respectively). The correct order of increasing electron affinity is $O < S < F < Cl$.

The correct order of increasing electron affinity of the following elements is

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