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Question

Assertion :The melting and boiling points of the alkali metals are low. Reason: Alkali metals have metallic bonding.

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Both Assertion and Reason are incorrect
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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Alkali metals have weak metallic bonding due to the presence of only a single valence electron in them. Thus, there melting point is low.
Thus, both Assertion and Reason are correct, but the Reason is not the correct explanation of the Assertion.

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