1-19 Describe and differentiate molecules and polyatomic ions

1-19-1. What do molecules and polyatomic ions have in common?
A. They consist of at least two atoms sharing electrons
B. They consist of at least two atoms held together by ionic bonds
C. The number of protons is equal to the number of electrons

1-19-2. What type of bond holds the atoms together in the polyatomic ions chromate (CrO₄^2-) and nitrate (NO₃^-)?
A. ionic, ionic, B. ionic, covalent,
C. covalent, ionic, D. covalent, covalent