In periodic table, the metallic character of elements

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increases from left to right across a period and on descending a group

increases from left to right across a period and decreases on descending a group

decreases from left to right across a period and on descending in a group

decreases from left to right across a period and increases on descending in a group.

answer is D.

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Detailed Solution

We know that as we move along the period from left to right effective nuclear charge on valence shell electrons increases that's why tendency to lose electrons decreases, similarly metallic character decreases.

But, down the group effective nuclear charge on valence shell electrons decreases because the outermost electrons move farther away from the nucleus that’s why metallic character increases .

Hence, from above conditions option(d) is the answer.

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