Question

How many electrons do group 2 elements have in their S orbital of the valence shell?

(a) 1

(b) 2

(c) 3

(d) 4

I got this question during an interview for a job.

The doubt is from s-Block Elements in chapter s-Block Elements of Chemistry – Class 11

Answer 1

The correct choice is (b) 2

For explanation: The alkaline earth metals have two electrons in the s-orbital of their valence shell and their general electronic configuration as represented as ns^2. Similar to the alkali metals these elements compounds are predominantly ionic.