AP Chemistry Ions to Memorize

rubidium

Rb+

cesium

Cs+

francium

Fr⁺

beryllium

Be ²⁺

magnesium

Mg ²⁺

calcium

Ca ²⁺

strontium

Sr²⁺

barium

Ba²⁺

radium

Ra²⁺

aluminum

Al³⁺

gallium

Ga³⁺

silicon(IV)

Si⁴⁺

germanium(IV)

Ge⁴⁺

arsenic(V)

As⁵⁺

bismuth(V)

Bi⁵⁺

group 1

₁⁺; alkali metals

group 2

2⁺; alkaline earth metals

group 13

3⁺; boron

group 14

4⁺; carbon

group 15

5⁺; nitrogen

carbide

C⁴⁻

nitride

N³⁻

phosphide

P³⁻

oxide

O²⁻

sulfide

S²⁻

selenide

Se²⁻

fluoride

F⁻

chloride

Cl⁻

bromide

Br⁻

iodide

I⁻

iron(II) or (III)

transition metal

copper(I) or (II)

transition metal

mercury(I) or (II)

transition metal

tin(II) or (IV)

transition metal

lead(II) or (IV)

transition metal

cobalt(II) or (V)

transition metal

managanese(II) or (IV)

transition metal

chromium(II) or (III)

transition metal

elements that dont have roman numerals

Zn²⁺, Ag⁺, Cd²⁺, Ni²⁺

ammonium

NH₄⁺

hydronium

H₃O⁺

acetate

C₂H₃O₂⁻ or CH₃COO⁻

azide

N₃⁻

bromate

BrO₃⁻

cyanide

CN⁻

dihydrogen phosphate

H₂PO₄⁻

bicarbonate (hydrogen carbonate)

HCO₃⁻

bisulfate (hydrogen sulfate)

HSO₄⁻

hydroxide

OH⁻

nitrate

NO₃⁻

nitrite

NO₂⁻

perchlorate

ClO₄⁻

chlorate

ClO₃⁻

chlorite

ClO₂⁻

hypochlorite

ClO⁻

iodate

IO₃⁻

permanganate

MnO₄⁻

thiocyanate

SCN⁻

carbonate

CO₃²⁻

chromate

CrO₄²⁻

dichromate

Cr₂O₇²⁻

hydrogen phosphate

HPO₄²⁻

sulfate

SO₄²⁻

sulfite

SO₃²⁻

thiosulfate

S₂O₃²⁻

oxalate

C₂O₄²⁻

silicate

SiO₃²⁻

tetraborate

B₄O₇²⁻

peroxide

O₂²⁻

selenate

SeO₄²⁻

tartrate

C₄H₄O₆²⁻

phosphate

PO₄³⁻

phosphite

PO₃³⁻

arsenate

AsO₄³⁻

borate

BO₃³⁻

diatomic molecules

Br₂, I₂, N₂, Cl₂, H₂, O₂, F₂

hydrochloric acid

HCl; strong acid

perchloric acid

HClO₄; strong acid

sulfuric acid

H₂SO₄; strong acid

hydrobromic acid

HBr⁻; strong acid

nitric acid

HNO₃; strong acid

chloric acid

HClO₃; strong acid

hydroiodic acid

HI⁻; strong acid

periodic acid

HIO₄; strong acid