NOTE: If you are determining the chemical formula, please write down the symbol(s) and charge of the cation and anion before writing the correct chemical formula.
1. Pentanitrogen dichloride
2. Pb1(C1O3</sub)<sub>2
3. Nitric acid
4. S4F9
5. Tin (IV) chromate
6. S4F9
6. Manganese (II) cyanide
7. H3P1O4 {or as I have been using but is wrong, H3(P1O4)1}