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Question
Assertion :Fluorine has a less negative electron affinity than chlorine. Reason: There is the relatively greater effectiveness of 2p−electrons in the small Fatom to repel the additional electron entering the atom than to 3p−electrons in the larger Cl atom.
Assertion :Fluorine has a less negative electron affinity than chlorine. Reason: There is the relatively greater effectiveness of 2p−electrons in the small Fatom to repel the additional electron entering the atom than to 3p−electrons in the larger Cl atom.
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Solution
The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
The effectiveness of 2p-electrons in the small Fatom (to repel the additional electron entering the atom) is relatively greater than that of 3p−electrons in the larger Cl atom. Hence, fluorine has a less negative electron affinity than chlorine. Thus, both assertion and reason are correct and the reason is the correct explanation for the assertion.
The effectiveness of 2p-electrons in the small Fatom (to repel the additional electron entering the atom) is relatively greater than that of 3p−electrons in the larger Cl atom. Hence, fluorine has a less negative electron affinity than chlorine. Thus, both assertion and reason are correct and the reason is the correct explanation for the assertion.
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