common ions

H⁺

hydrogen ion

Li⁺

lithium ion

Na⁺

sodium ion

K⁺

potassium ion

Cs⁺

cesium ion

Ag⁺

silver ion

NH₄⁺

ammonium ion

Cu⁺

copper(I) or cuprous ion

Mg²⁺

magnesium ion

Ca²⁺

calcium ion

Sr²⁺

strontium ion

Ba²⁺

barium ion

Zn²⁺

zinc ion

Cd²⁺

cadmium ion

Co²⁺

cobalt(II) or cobaltous ion

Cu²⁺

copper(II) or cupric ion

Fe²⁺

iron(II) or ferrous ion

Mn²⁺

manganese(II) or manganous ion

Hg₂²⁺

mercury(I) or mercurous ion

Hg²⁺

mercury(II) or mercuric ion

Ni²⁺

nickel(II) or nickelous ion

Pb²⁺

lead(II) or plumbous ion

Sn²⁺

tin(II) or stannous ion

Al³⁺

aluminum ion

Cr³⁺

chromium(III) or chromic ion

Fe³⁺

iron(III) or ferric ion

H⁻

hydride ion

F⁻

fluoride ion

Cl⁻

chloride ion

Br⁻

bromide ion

I⁻

iodide ion

CN⁻

cyanide ion

OH⁻

hydroxide ion

CH₃COO⁻ (or C₂H₃O₂⁻)

acetate ion

ClO₃⁻

chlorate ion

ClO₄⁻

perchlorate ion

NO₃⁻

nitrate ion

MnO₄⁻

permanganate ion

O²⁻

oxide ion

O₂²⁻

peroxide ion

S²⁻

sulfide ion

CO₃²⁻

carbonate ion

CrO₄²⁻

chromate ion

Cr₂O₇²⁻

dichromate ion

SO₄²⁻

sulfate ion

N³⁻

nitride ion

PO₄³⁻

phosphate ion

HONClBrIF

Diatomics