Respuesta :
All the elements in Group 2 have two electrons in their valence shells, giving them an oxidation state of +2.
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 [tex]ns^{2}[/tex].
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.
