By looking at the relative positions of the elements calcium, Ca, fluorine, F, sulfur, S, and oxygen, O, in the Periodic Table, which TWO descriptions are TRUE about calcium fluoride, CaF2, and sulfur dioxide, SO2? CaF2 is an ionic compound, and SO2i is a covalent compound.

CaF2 is formed by covalent bonds, and SO2 is formed by ionic bonds.

CaF2 cannot conduct electricity when dissolved in water, but SO2 can.

CaF2 is a gas at room temperature, while SO2 has a high boiling point.

CaF2 has a high boiling point, while SO2 is a gas at room temperature.

CaF2 is soft at room temperature, while SO2 is hard and forms crystals.