1. Nomenclature Covalent Naming and Formula Writing

2. Molecular Nomenclature Prefix System (binary compounds) Prefix System (binary compounds) 1.Less e - neg atom comes first. 2.Add prefixes to indicate # of atoms. Omit mono- prefix on first element. 3.Change the ending of the second element to -ide.

3. PREFIXmono-di-tri-tetra-penta-hexa-hepta-octa-nona-deca-NUMBER12345678910 Molecular Nomenclature

4. CCl 4 CCl 4 N 2 O N 2 O SF 6 SF 6 –carbon tetrachloride –dinitrogen monoxide –sulfur hexafluoride Molecular Nomenclature

5. arsenic trichloride arsenic trichloride dinitrogen pentoxide dinitrogen pentoxide tetraphosphorus decoxide tetraphosphorus decoxide –AsCl 3 –N2O5–N2O5–N2O5–N2O5 –P 4 O 10 Molecular Nomenclature

6. NOF Cl Br I H Molecular Nomenclature The Seven Diatomic Elements The Seven Diatomic Elements Br 2 I 2 N 2 Cl 2 H 2 O 2 F 2