PowerPoint Presentation

							    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:
    SO3 Sulfur trioxide         IF5    Iodine pentafluoride
   CO Carbon monoxide N2Br4 Dinitrogen tetrabromide
 Notice that the formula is written as least electronegative to most electronegative.
 Notice that the number of elements in the compound is mentioned in the name.
 Notice that the first nonmetal does not use a prefix if there is only one.
  Prefixes:
                                          There are also molecular
  1 – mono          6 – hexa              compounds that only use their
  2 – di            7 - hepta             common name. For example:
  3 – tri           8 – octa              H2O is water
  4 – tetra         9 - nona
                                          NH3 is ammonia
  5 – penta         10 - deca
                                          H2O2 is hydrogen peroxide
PRACTICE PROBLEMS #9c
1. AsCl3     Arsenic trichloride       2. SeO     Selenium
                                                  monoxide

                                                 Diboron
3. XeF4      Xenon tetrafluoride       4.   B2O3 trioxide

5. P2S3                                6. SiO2   Silicon
            Diphosphorus trisulfide
                                                 dioxide

7. SF6       Sulfur hexafluoride       8. NI3    Nitrogen
                                                 triiodide

         Phosphine, this is                     Carbon
9.   PH3 another exception.           10.   CBr4tetrabromide

              Tetraphosphorus                    Oxygen
11. P4O10     decaoxide                12.   OF2 difluoride
GROUP STUDY PROBLEMS #9c
1. SeCl2       2. NO           3. CF4       4. N2O4

5. NH3        6. SiO4          7. ClF        8. CO2

9. Phosphorus triiodide         10. Sulfur dioxide

11. Dinitrogen tetrachloride    12. Hydrogen peroxide

13. Arsenic monophosphide 14. Diboron trioxide