Question

Please do answer!!!!!!

Answer 1

Heyo, the answers are......

The listed elements belong to the third period.

Magnesium sulphate

A,B and C. (A is Sodium, B is Magnesium, C is Aluminium)

Chlorine i.e. H

The compound is AlCl3 which is aluminium chloride...

Hope u get it....

Answer 2

1) Third period

Group—1, 2, 13, 14, 15, 16, 17, 18 respectively.

2) Nature of compound: Electrovalent/ionic.

3) Metals—A and B; Non-metals—E, F, G

4) G/H

5) CG3

I hope this answer helps you