Question

what is valency and where it be use!???????​

Answer 1

Answer:

Valency is the combining power of an element. Elements in the same group of the periodic table have the same valency. The valency of an element is related to how many electrons are in the outer shell. The noble gases have the valency 0 as they do not usually combine with other elements.

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Answer 2

Answer:

valency means that the element has four orbitals... K,L,M,N...

Explanation:

SO IF OXYGEN VALENCY IS

ATOMIC NO-8

SO, 2,6

= 8-6

=2

THEREFORE, 2 VALANCE ELECTRONS...