Write the correct formulas for the following compounds. Indicate which ones are ionic compounds.
1. Compound
2. Nickel (II) acetate
3. Strontium chlorate
4. Carbon tetrafluoride
5. Mercury (11) nitride
6. Calcium hydrogen sulfite
7. Phosphorus trifluoride
8. Potassium sulfide
9. Sodium permanganate
10. Lithium phosphate
11. Sulfur dichloride
Which are ionic?