Question

How does the metallic character of elements vary on moving down a vertical column give reason and example 0?

Answer 1

Metallic character or electropositivity increases as we go down the column, because as we move down the atomic size increases(number of shells increases) so the force of attraction between electrons and nucleus decreases that is nuclear charge decreases and it becomes easier to lose electrons and become cation.

EXAMPLE :   Li

                     Na           HERE METALLIC CHARACTER DECREASE

                     K

                    Rb

Answer 2

Metallic character of elements increases on moving down a vertical column

Explanation:

Reactivity of a metal is defined as the tendency of an element to lose electrons. The reactivity increases as we move down a group and it decreases as we move across a period.

When the size of an element increases, the valence electrons gets away from the nucleus and the tendency of an element to loose electrons increases.

In a group, the size of an element increases because there is an addition of new shell and electron is added in that shell.

Thus for alkali metals, the metallic character increases from Lithium to sodium to potassium and so on.

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