Chemical-Nomenclature

• Nomenclature


  Other term for the word "naming"
• Binary compounds


  Compounds made of two different elements bonded together
• Monoatomic ion


  An ion composed of single atom
• Polyatomic ion


  An ion composed of more than one atom
• Cations


  Positively-charged ions due to losing of electrons (metals)
• Anions


  Negatively-charged ions due to gaining of electrons (non-metals)
• Nomenclature of cations


  • Name of metal atom
  • Ca+2 Calcium
  • Na+ Sodium
  • Al+3 Aluminum
  • Zn+2 Zinc
• Nomenclature of anions


  • Name of non-metal with "ide" ending
  • Cl- Chloride
  • S-2 Sulfide
  • O-2 Oxide
  • F- Fluoride
• Transition metals


  • Elements with partially filled d-orbitals
  • Also known as "transition elements"
• Nomenclature of transition metals

  • Use Roman Numerals to denote the charge of the atom
  • Fe2+ Iron (II)
  • Fe3+ Iron (III)
  • Cu+ Copper (I)
  • Cu+2 Copper (II)
  • Au+ Gold (I)
  • Au+3 Gold (III)
  • Sn+2 Tin (II)
  • Sn+4 Tin (IV)
  • Pb+2 Lead (II)
  • Pb+4 Lead (IV)
  • Mn+2 Manganese (II)
  • Mn+3 Manganese (III)
• Polyatomic ions


  An ion composed of more than one atom
• Binary compounds


  A substance composed of exactly two different elements
• Type I binary compounds

  Between cations and anions
• Type II binary compounds

  Between transition metals and nonmetals
• Nomenclature of Type I binary compounds

  • Cation name + Anion name with -ide ending
  • Sodium + Sodium Chloride
  • Potassium + Potassium Iodide
  • Calcium + Calcium Chloride
• Nomenclature of Type II binary compounds

  • Transition metal name with Roman Numerals + Anion name with "ide" ending
  • Iron + Iron (III) Oxide
  • Gold + Gold (III) Chloride
• Ternary compounds


  Formed from a metal cation and a polyatomic anion, contain 3 or more different elements in the formula
• Nomenclature of ternary compounds

  • Metal cations + Polyatomic anions
  • Calcium + Calcium Hydroxide
  • Calcium + Calcium Sulfate
• When the formula unit contains two or more of the same polyatomic ion, that ion is written in parentheses with the subscript written outside the parentheses