Question

Define valency by taking the examples of magnesium (at no 12 ) and oxygen (at no 8)

Answer 1

Explanation:

the number of atom present on the last chain

is called the valency

1. valency of magnesium =(2,8,2)

there are 2 electron on last chain of magnesium .

valency of magnesium =2.

1. valency of oxygen =(2,8,6)

there are 6 electron on last chain of

oxygen.

valency=6.

Answer 2

In chemistry, the valence or valency of an element is the measure of its combining capacity with other atoms when it forms chemical compounds or molecules.

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