A student states that nonmetal atoms form covalent bonds by gaining electrons until they have eight valence electrons. What is wrong with this statement?
A. Nonmetal atoms do not usually form covalent bonds.
B. Covalent bonds form when atoms share electrons.
C. Nonmetal atoms form bonds until they have six valence electrons.
D. Covalent bonds form between atoms that already have eight valence electrons.