NH⁺₄ Ammonia ClO₄ Perchlorate C₂O₄ Oxalate MnO₄ Permanganese O₂ Oxide PO₄ Phosphate PO₃ Phosphite SO₄ Sulfate SO₃ Sulfite CNS Thiocyanate CH₃OOH Acetate CO₃ Carbonate N₃ Azide ClO₃ Chlorate ClO₂ Chlorite ClO Hypochlorite CrO₄ Chromate Cr₂O₇ Dichromate HCO₃₍ₐq) Bicarbonate CN Cyanide HCO₃ Hydrogen Carbonate HPO₄ Hydrogen Phosphate H₂PO₄ Dihydrogen Phosphate HSO₃ Hydrogen Sulfite HSO₄ Hydrogen Sulfate HS Hydrogen Sulfide OH Hydroxide NO₃ Nitrate NO₂ Nitrite HSO₃₍ₐq) Bisulfite HSO₄₍ₐq) Bisulfate HS₍ₐq) Bisulfide Gold (III) Auric Gold (II) Aurous Cobalt (III) Cobaltic Cobalt (II) Cobaltous Chromium (III) Chromic Chromium (II) Chromous Copper (II) Cupric Copper (I) Cuprous Iron (III) Ferric Iron (II) Ferrous Mercury (II)Mercuric Mercury (I) Mercurous ManganeseManganic (III) ManganeseManganous (II) Lead (IV) Plumbic Lead (II) Tin (IV) Tin (II) AX2 deg AX3 deg AX4 deg AX5 deg AX6 deg AX2 shape AX3 shape AX4 shape AX5 shape AX6 shape Plumbous Stannic Stannous 180 120 109.5 120 / 90 90 linear trigonal planar tetrahedral trigonal pyramidal octahedral