1. Sulfur trioxide
2. Silicon tetrachloride
3. Arsenic pentoxide
4. Dinitrogen trioxide
5. Dinitrogen pentoxide
6. Phosphorus pentasulfide
7. Sulfur hexafluoride
8. Iodine pentoxide
9. Dichlorine heptoxide
10. Tetrasulfur tetranitride
11. (Name depends on structure)
12. Phosphorus tribromide
13. Nitric oxide
14. Phosphorus pentachloride
15. Disulfur dichloride
16. Nitrogen trifluoride
17. Oxygen difluoride
18. Oxygen difluoride