Covalent Compounds

• How to find the name of the compound using the Chemical Formula

  Always look at the 1st and 2nd element;

  -for the 1st element, don't use the prefix if its subscript is 1, use prefix for 2 and above;

  
  

  -for the 2nd element, use the prefix for all numbers and add -ide
• How to find the Chemical Formula using the name of the compound

  Always remember Greek prefixes like "mono" for 1 and "di" for 2; apply the prefixes to both elements, adding "-ide" to the second element
• Chemical Formula of Covalent Compounds consists of the 1st and 2nd element
• For the 1st Element in Covalent Compounds, don't use the prefix if its subscript is 1; use prefix for 2 and above
• Changing Name to Chem. Formula

  • Ex: Chlorine Trifluoride -> ClF, Phosphorus Pentachloride -> PCl
• Changing Chem. Formula to Name

  • Ex: ClF -> Chlorine Trifluoride, PCl -> Phosphorus Pentachloride
• Covalent Compounds form between nonmetals and nonmetals
• For the 2nd Element in Covalent Compounds, use the prefix for all numbers and add -ide
• Greek prefixes

  • 1 - mono
  • 2 - di
  • 3 - tri
  • 4 - tetra
  • 5 - penta
  • 6 - hexa
  • 7 - hepta
  • 8 - octa
  • 9 - nona
  • 10 - deca