Question

how does metalic character changes on moving down the group and across a period and why​

Answer 1

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Down the group, the effective nuclear charge experienced by valence electrons decreases because the outermost electrons move further away from the nucleus. Therefore, these electrons can be lost easily. Hence, metallic character decreases across a period and increases down a group.

Answer 2

Answer:

Metallic character increases down each Group of the Table as the outer electrons are further from the nucleus and require less energy for their removal. (a) metallic character decreases from left to right in each Period.

Explanation: