Assertion :Metallic character is highest at the extremely left side of the periodic table. Reason: Ionization enthalpy increases across a period.

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 A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
At the extremely left side of the periodic table, the ionization enthalpy is lowest and is because of the larger size of the atoms, that makes it easy to remove an electron from valence shell. Therefore the metallic character/ electropositive nature is highest at the extremely left side of the periodic table.
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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