# Oxidation state of group 2 elements

I have came across the following statement : "the oxidation state $+II$ is stable for the elements of the alkalin earth metals" , the same is true for the elements of the first group , i've looked for a possible explanation and heard that it has a relation with the charge densities of the elements , if that's true what is that relation ? otherwise , what could explain the oxidation states for each of the groups in the periodic table ?

• Can you clarify "the same is true for elements of the first group"? If you mean "the oxidation state +2 is stable for the elements of the alkali metals" then the statement is not correct. Sep 27 '13 at 20:04
• @bobthechemist no , i mean that the oxidation states +1 and + 2 are stable for the alkali and the alkali earth metals respectively . Sep 28 '13 at 11:49