Question

what happens to the valency as it move down the periodic and why​

Answer 1

Answer:

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Explanation:

The atomic radius decreases in a period, as nuclear charge increases, which attracts the electrons more strongly and hence size decreases. Similarly, the valency first increases from 1-4 and then decreases from 4-0 due to the strong nuclear positive charge in a period

Answer 2

Answer:

Explanation:

Valency remains constant on going down the Group Because suppose am taking 1st group H, Li, Na, Ka, Rb,cs, Fr (all have a valency of 1 ) therefore it's not changing