Polyatomic ions

What are polyatomic ions?

Polyatomic ions are a combination of atoms that share a charge, functioning as charged molecules.

Ammonium

NH₄⁺ (+1 charge)

Hydronium

H₃O⁺ (+1 charge)

Acetate

C₂H₃O₂⁻

Cyanide

CN⁻ (-1 charge)

Nitrate

NO₃⁻ (-1 charge)

Nitrite

NO₂⁻, a negatively charged ion derived from nitrous acid.

Hydroxide

OH⁻, a negatively charged ion consisting of one oxygen and one hydrogen atom.

Hydrogen Carbonate

HCO₃⁻, also known as bicarbonate, a negatively charged ion derived from carbonic acid.

Hydrogen Sulfate

HSO₄⁻, a negatively charged ion derived from sulfuric acid.

Sulfate

SO₄²⁻, a negatively charged ion derived from sulfuric acid.

Sulfite

SO₃²⁻, a negatively charged ion derived from sulfurous acid.

Phosphate

PO₄³⁻, a negatively charged ion derived from phosphoric acid.

Phosphite

PO₃³⁻, a negatively charged ion derived from phosphorous acid.

Chromate

CrO₄²⁻, a negatively charged ion containing chromium and oxygen.

Dichromate

Cr₂O₇²⁻, a negatively charged ion containing two chromium atoms and seven oxygen atoms.

Permanganate

MnO₄⁻, a negatively charged ion containing manganese and oxygen.

Perchlorate

ClO₄⁻, a negatively charged ion derived from perchloric acid.

Hypochlorite

ClO⁻, a negatively charged ion derived from hypochlorous acid.