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Nomenclature of Molecular compounds

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:. SO 3. IF 5. Iodine pentafluoride. Sulfur trioxide. N 2 Br 4. CO. Carbon monoxide.

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Nomenclature of Molecular compounds

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  1. 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 IF5 Iodine pentafluoride Sulfur trioxide N2Br4 CO Carbon monoxide 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: 1 – mono 6 – hexa 2 – di 7 - hepta 3 – tri 8 – octa 4 – tetra 9 - nona 5 – penta 10 - deca There are also molecular compounds that only use their common name. For example: H2O is water NH3 is ammonia H2O2 is hydrogen peroxide

  2. PRACTICE PROBLEMS Selenium monoxide Arsenic trichloride Diboron trioxide 1. AsCl3 2. SeO 3. XeF4 4. B2O3 5. P2S3 6. SiO2 7. SF6 8. NI3 9. PH3 10. CBr4 11. P4O10 12. OF2 Xenon tetrafluoride Silicon dioxide Diphosphorus trisulfide Nitrogen triiodide Sulfur hexafluoride Phosphine, this is another exception. Carbon tetrabromide Tetraphosphorus decaoxide Oxygen difluoride

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