NO₂⁻
Nitrite ion
NO₃⁻
Nitrate ion
SO₃²⁻
Sulfite ion
SO₄²⁻
Sulfate ion
ClO⁻
Hypochlorite ion
ClO₂⁻
Chlorite ion
ClO₃⁻
Chlorate ion
ClO₄⁻
Perchlorate ion
NH₄⁺
Ammonium ion
OH⁻
Hydroxide ion
CN⁻
Cyanide ion
CO₃²⁻
Carbonate ion
HCO₃⁻
Bicarbonate ion
HSO₃⁻
Bisulfite ion
HSO₄⁻
Bisulfate ion
MnO₄⁻
Permanganate ion
C₂H₃O₂
acetate ion
CH₃COO
acetate ion
PO₄³⁻
Phosphate ion
H₂O
“water” (never write chem form)
NH₃
ammonia
H₂O₂
Hydrogen peroxide
CH₄
Methane
7 diatomics
H₂ N₂ O₂ F₂ Cl₂ Br₂ I₂