Question

define valency .........​

Answer 1

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

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.

Answer 2

Answer:

the combining power of an element, especially as measured by the number of hydrogen atoms it can displace or combine with.