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Assertion . Li resembles Mg. Reason . `Li^(+)` has approximately the same size as `Mg^(2+)`A. If both assertion and reason are true, and reason is the true explanation of the assertion.B. If both assertion and reason are true, but reason is not the true explanation of the assertion.C. If assertion is true, but reason is falseD. If both assertion and reason are false.

Answer» Correct Answer - a


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