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JEE CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

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The electron affinity of

K_{(g)}^ +

ion is numerically equal to

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Correct option: D

Ionisation energy of K atom

Option D (Ionisation energy of K atom) is correct because the electron affinity of a cation (K+) is numerically equal to the ionization energy of its neutral atom (K).

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