Unit 5: Formula Writing and Naming

• Metals are atoms and non-metals are molecules (covalent)
• diatomic: iodine, bromine, oxygen, fluorine, chlorine, nitrogen, hydrogen
• ionic - electrons transferring in which the metal gives/loses electrons to the non-metal which gains electrons

  polyatomic + non-metal = ionic

  roman numerals only necessary if multi-valent
• One charge:

  • alkali
  • alkaline earth
  • aluminum
  • zinc
  • silver
• ide - non-metal on PT

  ate/ite - polyatomic ion (back)
• Nomendature - a set of rules that dictates how compounds are names to ensure that everybody does it the same way
• Oxidation numbers for a covalent compound indicates number of shared electrons
• Binary acids (H+ & other element)

  • named after anion it is bonded with

  (CN or Cyanide is exception)

  • hydro
  • _ic
  • acid
• Oxy acids ( H+ oxyanion - non-metal element + O that is an ion)

  • name polyatomic ion
  • ate to ic / ite to ous
  • acid