Atoms of Metallic Elements Can Form Ionic Bonds,but They Are

Multiple Choice

Atoms of metallic elements can form ionic bonds,but they are not very good at forming covalent bonds.Why?

A) These atoms are too large to be able to come in close contact with other atoms.
B) They have a great tendency to lose electrons.
C) Their valence shells are already filled with electrons.
D) They are on the wrong side of the periodic table.