Assertion : $L i$ and $M g$ shows diagonal relationship. Reason: $L i$ and $M g$ are diagonal to each other in the Periodic table.

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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Assertion is incorrect but Reason is correct

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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
$L i$ and $M g$ are diagonal to each other in the Periodic table.

$L i$ and $M g$ shows the diagonal relationship.

It is due to the similarity in ionic sizes and charge/radius ratio of the elements.

Hence, both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

Hence, the correct option is $B$

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