Polyatomic Ions Memorization List

Comprehensive vocabulary flashcards for common polyatomic ions organized by charge, featuring chemical formulas and proper ion naming.

Ammonium

$$NH_4^+$$

Hydronium

$$H_3O^+$$

Mercury(I)

$$Hg_2^{2+}$$

Cyanide

$$CN^-$$

Cyanate

$$OCN^-$$

Thiocyanate

$$SCN^-$$

Hydroxide

$$OH^-$$

Acetate

$$CH_3COO^- (C_2H_3O_2^-)$^$

Azide

$$N_3^-$$

Permanganate

$$MnO_4^-$$

Nitrate

$$NO_3^-$$

Nitrite

$$NO_2^-$$

Dihydrogen Phosphate

$$H_2PO_4^-$$

Hydrogen Carbonate (Bicarbonate)

$$HCO_3^-$$

Hydrogen Sulfate

$$HSO_4^-$$

Hydrogen Sulfite

$$HSO_3^-$$

Perchlorate

$$ClO_4^-$$

Chlorate

$$ClO_3^-$$

Chlorite

$$ClO_2^-$$

Hypochlorite

$$ClO^-$$

Hydride

$$H^-$$

Peroxide

$$O_2^{2-}$$

Phthalate

$$C_8H_4O_4^{2-}$$

Chromate

$$CrO_4^{2-}$$

Dichromate

$$Cr_2O_7^{2-}$$

Hydrogen Phosphate

$$HPO_4^{2-}$$

Carbonate

$$CO_3^{2-}$$

Sulfate

$$SO_4^{2-}$$

Sulfite

$$SO_3^{2-}$$

THIOsulfate

$$S_2O_3^{2-}$$

Phosphate

$$PO_4^{3-}$$

Phosphite

$$PO_3^{3-}$$

Arsenate

$$AsO_4^{3-}$$

Aresenite

$$AsO_3^{3-}$$

Borate

$$BO_3^{3-}$$

Carbide

$$C^{4-}$$

Silicate

$$SiO_4^{4-}$$