Which of the following is a false statement regarding polyatomic ions? a) Polyatomic ions must contain two or more atoms in their chemical formula. b) Polyatomic ions must have either a positive or negative charge. c) Polyatomic ions must have at least two different elements chemically bonded together. d) Polyatomic ions can be combinations of metals and nonmetals. e) Polyatomic ions can be oxoanions.
