Common Polyatomic Ions

Anions (1)

100

What's the formula/ Charge of 

Nitrite

NO^-₂

200

What's the formula/Charge of Nitrate?

NO^-₃

300

What's the formula/Charge of Phosphate?

PO^3-₄

400

What's the formula charge of Phosphite?

PO^3-₃

500

What's the formula charge of Sulfate?

SO^2-₄

Anions (2)

100

What's the formula charge of hydrogen sulfate or bisulfate?

HSO^-₄

200

What's the formula/charge of sulfite? 

SO^2-₃

300

What's the formula charge of carbonate?

CO^2-₃

400

What's the formula charge of Hydrogen Carbonate or bicarbonate?

HCO^-₃

500

What's the formula charge of Acetate? 

C₂H₃O^-₂

Anions (3)

100

What's the formula charge of Permanganate? 

MnO^-₄

200

What's the formula/ charge of perchlorate?

CLO^-₄

300

What's the formula/charge of Chlorate?

CLO^-₃

400

What's the formula charge of Chlorite?

CLO^-₂

500

What's the formula/charge of Hypochlorite?

CLO^-

Anions (4)

100

What's the formula /charge of hydroxide

OH^-

Cations

100

What's the formula charge of hydronium? 

H₃O⁺

200

What's the formula /charge of mercury?

Hg²⁺₂

300

What's the formula charge of ammonium? 

NH⁺₄