Question

what is the number of valence electron in 1. Cl- 2. Na+ 3. Mg+2 4. N3-​

Answer 1

Number of valence electrons is the given elements are:

1. Cl (Chlorine )has 7 valence electrons and has valency (-)1
2. Na (Sodium) has 1 valence electrons and has valency (+)1
3. Mg (Magnesium)  has 2 valence electrons and has valency (+)2
4. N Nitrogen has 5 valence electrons and has valency (-)3

Thank u

Answer 2

THE ANSWER FOR UR QUESTION IS GIVEN:

Cl-:8

Na+:8

Mg2+:8

N3-:8