Electron affinity depends on

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(D) Electron affinity is the amount of energy released when an electron is added to a neutral atom to form a negative ion. $EA$ depends on the effecti

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Atomic size and nuclear charge both

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(D) Electron affinity is the amount of energy released when an electron is added to a neutral atom to form a negative ion. $EA$ depends on the effective nuclear charge and the atomic size. As the atomic size increases,the distance between the nucleus and the incoming electron increases,resulting in weaker attraction. As the nuclear charge increases,the attraction for the incoming electron increases. Therefore,$EA$ is influenced by both atomic size and nuclear charge.

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