Question

explain the chemical properties of alkaline earth metals with a) oxygen,b) hydrogen, c)halogen​

Answer 1

ELECTRODE POTENTIAL OF ALKALINE EARTH METALS - DEFINITION

All the alkaline earth metals are highly reactive as they have tendency to lose 2 electrons from s-orbitals. This high reactivity is due to low ionization energy and high negative values of standard electrode potential.

The chemical reactivity of alkaline earth metals increases on moving down the group from Be to Ba, because the ionization enthalpy decreases and the electrode potential become more negative with increasing atomic number from Be to Ra.

Thus Be is least reactive and Ra is most reactive element.