Question

What do all elements in group 2 have in common

Answer 1

Explanation:

Elements of group 2 are also known as alkaline earth metals. The elements which belong to this group are beryllium, magnesium, calcium, strontium, barium and radium.

Their general electronic configuration is $ns^{2}$.

All the elements of group 2 have two valence electrons. This means that each element of group 2 is able to acquire a charge of +2.

Answer 2

All the elements in Group 2 have two electrons in their valence shells, giving them an oxidation state of +2.