Question

What is the similarity in the electronic configuration of Mg, Ca and Sr?​

Answer 1

Explanation:

1. Mg

z of mg = 12

configuration = 2,8,2

2. Ca

z of ca = 20

configuration = 2,8,8,2

3. Sr

z of sr = 38

configuration = 2,8,18,8,2

:- the valence electron of all the 3 elements is same . Hence their valency is same