POLYATOMIC IONS

ion roots

MANGANATE

MnO₃

charge: -1

CHLORATE

ClO₃

charge: -1

NITRATE

NO₃

charge: -1

HYDROXIDE

OH

charge: -1

BROMATE

BrO₃

charge: -1

ACETATE

1. C₂H₃O₂    (charge: -1)

OR

2. CH₃COO (charge: -1)

HYDROGEN SULFATE

HSO₄

charge: -1

HYDROGEN CARBONATE

HCO₃

charge: -1

CHROMATE

CrO₄

charge: -2

DICHROMATE

Cr₂O₇

charge: -2

SULFATE

SO₄

charge: -2

CARBONATE

CO₃

charge: -2

SELENATE

SeO₄

charge: -2

DIHYDROGEN PHOSPHATE

(both acidic)

H₂PO₄

charge: -1

HYDROGEN PHOSPHATE

(both basic)

HPO₄

charge: -2

AMMONIUM

NH₄

charge: +1

HYDRONIUM

H₃O

charge: +1

PHOSPHATE

PO₄

charge: -3

CYANIDE

CN

charge: -1

common ions

HYDROXIDE

OH

charge: -1

NITRITE

NO₂

charge: -1

PERMANGANATE

MnO₄

charge: -1

OXALATE

C₂O₄

charge: -2

PEROXIDE

O₂

charge: -2

SILICATE

SiO₃

charge: -2

SULFITE

SO₃

charge: -2