What is the correct formula unit for the ionic compound, barium fluoride?

? BaF
? BF2
? BaF2
? Ba2F
? Ba2F3

1 answer

The correct formula unit for the ionic compound barium fluoride is BaF2. This is because barium (Ba) has a +2 charge and fluoride (F) has a -1 charge, so two fluoride ions are needed to balance the charge of one barium ion.