In alkaline earth metals, the electrons are more firmly held to the nucleus and hence

Options

A. Ionization energy of alkaline earth metals is greater than that of alkali metals
B. Alkaline earth are less abundant in nature
C. Reactivity of alkaline earth metals is greater than that of alkali metals
D. Atoms of alkaline earth metals are bigger in size than alkali metals.

Answer

A

Explanation

Ionization energies of alkaline earth metals are greater than those of alkali metals due to increased nuclear charge.