Question

The Valence shell Configuration of Group
llA is [ ]
a. ns1
b.ns2
c.np2
d.np3
PLZ SAY ONLY CORRECT OPTION PLZ SAY FAST URGENT ​

Answer 1

ns2 is the correct answer.

Explanation:

Be, Mg, Ca, Sr, Ba belongs to IIA group.

Each of them has ns2 as valence electron.

For eg. Be which has 4 electron

it's electronic configuration is 1s2 2s2.