Which element has maximum electron affinity?

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Question

(B) The electron affinity generally increases across a period from left to right due to an increase in effective nuclear charge and a decrease in atom

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$S$

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(B) The electron affinity generally increases across a period from left to right due to an increase in effective nuclear charge and a decrease in atomic size. Comparing the given elements: $Na$ (Group $1$),$Mg$ (Group $2$),$Al$ (Group $13$),and $S$ (Group $16$). Among these,$S$ is located furthest to the right in the periodic table,giving it the highest effective nuclear charge and the smallest atomic radius,which results in the maximum electron affinity.

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