5 Steps to a 5 AP Chemistry

COMMON IONS

Ions Usually With One Oxidation State

Li+ lithium ion N^3 − nitride ion

Na+ sodium ion O^2 − oxide ion

K+ potassium ion S^2 − sulfide ion

Mg^2 + magnesium ion F− fluoride ion

Ca^2 + calcium ion Cl− chloride ion

Sr^2 + strontium ion Br− bromide ion

Ba^2 + barium ion I− iodide ion

Ag+ silver ion

Zn^2 + zinc ion

Cd^2 + cadmium ion

Al^3 + aluminum ion

Cations With More Than One Oxidation State

+ 1 + 2

Cul+ copper(I) ion or cuprous ion Cu^2 + copper(II) ion or cupric ion

Hg 22 + mercury(I) ion or Hg^2 + mercury(II) ion or

mercurous ion mercuric ion

+ 2 + 3

Fe^2 + iron(II) ion or ferrous ion Fe^3 + iron(III) ion or ferric ion

Cr^2 + chromium(II) ion or Cr^3 + chromium(III) ion

chromous ion or chromic ion

Mn^2 + manganese(II) ion or Mn^3 + manganese(III) ion

manganous ion or manganic ion

Co^2 + cobalt(II) ion or cobaltous ion Co^3 + cobalt(III) ion or cobaltic ion

+ 2 + 4

Sn^2 + tin(II) ion or stannous ion Sn^4 + tin(IV) ion or stannic ion

Pb^2 + lead(II) ion or plumbous ion Pb^4 + lead(IV) ion or plumbic ion

Polyatomic Ions and Acids

Formula Name Ion Ion name

H 2 SO 4 sulfuric acid SO 42 − sulfate ion

H 2 SO 3 sulfurous acid SO 32 − sulfite ion

HNO 3 nitric acid NO 3 − nitrate ion

HNO 2 nitrous acid NO 2 − nitrite ion

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