Question

how does the valency vary on going down a group​

Answer 1

Answer:

The valency remains same in going down the group. ii) The valency first increases from 1to 4 and then decrease 4 to 0, in going from left to right in the period of the periodic table. ... (ii) The valency of an element is determined by the number of electrons in the outermost shell.

Explanation:

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