Question

Define Valency......​

Answer 1

ANSWER

ANSWER REFER TO THE ATTACHMENT

Answer 2

$\huge\underline\mathfrak\pink{Valency}$

It is loss or gain of electrons in their valence shells.

Or, we can say that, it is the combining capacity of any element.

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Types :

positive valency

example - Calcium is having +2 valency.

negative valency

chlorine is having -1 valency

zero valency

Neon is having 0 valency.