Assertion :Electron affinity value of $C l^{-}$ has negative value. Reason: Electron affinity values of all uninegative ions are negative.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is C Assertion is correct but Reason is incorrect
Electron affinity value of chloride ion has negative value, but it is not necessary that electron affinity of all uninegative ions are negative. Hence assertion is true but reason is false.

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