JEE Main Chemistry question

Electron affinity is the

(A)Energy released when an electron is added to an isolated atom in the gaseous stateCorrect
(B)Energy absorbed when an electron is added to an isolated atom in the gaseous state
(C)Energy required to take out an electron from an isolated gaseous atom
(D)Power of an atom to attract an electron to itself

Answer: (A)

Solution

By definition, electron affinity is the amount of energy released when an electron is added to a neutral, isolated gaseous atom to form a negative ion. Option (B) wrongly describes this as absorbed energy, option (C)

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Question ID VK-133285