An Incorrect Statement About the Alkaline Earth Metals Is

Multiple Choice

An incorrect statement about the alkaline earth metals is

A) Melting points generally decrease as one descends the group.
B) Densities are less than those of the corresponding alkali elements of the same period.
C) Ionic radii of the M²⁺ ion increases as one descends the group.
D) The first ionization energy is less than that of the second ionization energy.