Question

Define valence with example

Answer 1

Answer:

The combining capacity of an element is known as valence

Answer 2

The valency of an element is the number of hydrogen atoms that can combine with or replace (either directly or indirectly) one atom of the element.

Explanation:

For example

OH- can combine with one H+ to become H20 molecule its valance will be → 1 ;

and SO42- can combine with 2 H+ to form H2SO4 its valance will be → 2.

More examples with atoms along with valance are :

H →1; Mg→2; Al→3; C→4; N→3, and 5; P→3 and 5; O→2; S→ 2, 4 and 6; Cl→ 1; and Ne→0.

To summarize

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