why sodium has valency 1 and chlorine also 1?



Asked on

1 Answer | Add Yours

Top Answer

pramodpandey's profile pic

Posted on

Sodium has atomic mass 23, atomic number 11.

Chlorine has atomic mass 35 ,atomic number 17.

When we write electronic configuration

for Sodium Na - 2,8,1

Chlorine   Cl - 2,8,7

Both Na and Cl  require 1 electron either to loose or to gain ,so they can attain stable configuration.

Therefore  Na has +1 and Cl -1 valency

We’ve answered 301,523 questions. We can answer yours, too.

Ask a question