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(B) The electron affinity generally increases across a period from left to right as the effective nuclear charge increases and the size of the atom de

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$[Ne] \, 3s^2, \, 3p^5$

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(B) The electron affinity generally increases across a period from left to right as the effective nuclear charge increases and the size of the atom decreases. Option $A$ represents $Al$ $([Ne] \, 3s^2, \, 3p^1)$. Option $B$ represents $Cl$ $([Ne] \, 3s^2, \, 3p^5)$. Option $C$ represents $S$ $([Ne] \, 3s^2, \, 3p^4)$. Option $D$ represents $Cr$ $([Ne] \, 3s^2, \, 3p^6, \, 3d^5, \, 4s^1)$. Among these,$Cl$ is a halogen with a high tendency to gain an electron to achieve a stable noble gas configuration. Therefore,it has the highest electron affinity.

Among the following configurations,the element which has the highest electron affinity is

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