Question

explain valency by taking example of sodium and chlorine​

Answer 1

Answer:

The number of atoms loosed, gained or shared  by an atom to attain a stable electronic configuration is called valency.

Example-

Sodium has 1 electron in the valance shell so it donates electron

Chlorine has 7 electrons in valence shell so it accepts one electron...

Explanation:

Answer 2

Answer:

The number of atoms loosed, gained or shared by an atom to attain a stable electronic configuration is called valency. Example- Sodium has 1 electron in the valance shell so it donates electron. Chlorine has 7 electrons in valence shell so it accepts one electron