Nomenclature of Molecular compounds Name the least electronegative

Nomenclature of Molecular compounds Name the least electronegative nonmetal first using the prefix denoting how many are in the formula then prefix + root of the most electronegative nonmetal + ide ending: Iodine pentafluoride SO 3 Sulfur trioxide IF 5 CO Carbon monoxide N 2 Br 4 Dinitrogen tetrabromide ØNotice that the formula is written as least electronegative to most electronegative Ø Notice that the. number of elements in the compound is mentioned in the name. ØNotice that the first nonmetal does not use a prefix if there is only one. Prefixes: 1 – mono 2 – di 3 – tri 4 – tetra 5 – penta 6 – hexa 7 - hepta 8 – octa 9 - nona 10 - deca There also molecular compounds that only use their common name. For example: H 2 O is water NH 3 is ammonia H 2 O 2 is hydrogen peroxide

PRACTICE PROBLEMS #9 c 1. As. Cl 3 Arsenic trichloride 3. Xe. F 4 Xenon tetrafluoride 5. P 2 S 3 Diphosphorus trisulfide 7. SF 6 9. Sulfur hexafluoride Phosphine, this is PH 3 another exception. 11. P 4 O 10 Tetraphosphorus decaoxide 2. Se. O 4. Selenium monoxide Diboron B 2 O 3 trioxide 6. Si. O 2 Silicon dioxide 8. NI 3 Nitrogen triiodide 10. Carbon CBr 4 tetrabromide 12. Oxygen OF 2 difluoride

GROUP STUDY PROBLEMS #9 c 1. Se. Cl 2 2. NO 3. CF 4 4. N 2 O 4 5. NH 3 6. Si. O 4 7. Cl. F 8. CO 2 9. Phosphorus triiodide 10. Sulfur dioxide 11. Dinitrogen tetrachloride 12. Hydrogen peroxide 13. Arsenic monophosphide 14. Diboron trioxide