Ions

(--) means they are subscript

Ammonium

N(H4)+

Hydronium

(H3)O+

Silver

Ag+

Nickel

Ni2+

Zinc

Zn2+

Hydride

H- (when combined with a metal)

Hydroxide

OH-

Nitrate

N(O3)-

Hydrogen carbonate

HC(O3)-

Hydrogen sulphate

HS(O4)-

Hydrogen sulphide

HS-

Cyanide

CN-

Hydrogen sulfite

HS(O3)-

Nitrite

N(O2)-

Permanganate

Mn(O4)-

Ethanoate (acetate)

C(H3)COO-

Dihydrogen phosphate

(H2)P(O4)-

Sulfate

S(O4)2-

Carbonate

C(O3)2-

Sulfite

S(O3)2-

Dichromate

(Cr2)(O7)2-

Chromate

Cr(O4)2-

Thiosulfate

(S2)(O3)2-

Hydrogen phosphate

HP(O4)2-

Phosphate

P(O4)3-