Name two elements you would expect to show chemical reactions similar to magnesium. What is the basis for your choice?

Beryllium (Be) and Calcium (Ca).
Electronic configuration of both Be and Ca are similar , i.e. two electrons in outermost shells.

Be→( 2,2)

Ca→(2, 8, 8, 2)

Also basic oxides \(BeO \)and \(CaO \) are formed when both Be and Ca react with oxygen respectively.