| A | B |
|---|
| Cu1+ | Copper(I) ion or Cuprous ion |
| Cu2+ | Copper(II) ion or Cupric ion |
| Fe2+ | Iron(II) ion or Ferrous ion |
| Fe3+ | Iron(III) ion or Ferric ion |
| Hg2,2+ | Mercury(I) ion or Mercurous ion |
| Hg2+ | Mercury(II) ion or Mercuric ion |
| Pb2+ | Lead(II) ion or Plumbous ion |
| Pb4+ | Lead(IV) ion or Plumbic ion |
| Sn2+ | Tin(II) ion or Stannous ion |
| Sn4+ | Tin(IV) ion or Stannic ion |
| Cr2+ | Chromium(II) ion or Chromous ion |
| Cr3+ | Chromium(III) ion or Chromic ion |
| Mn2+ | Manganese(II) ion or Manganous ion |
| Mn3+ | Manganese(III) ion or Manganic ion |
| Co2+ | Cobalt(II) ion or Cobaltous ion |
| Co3+ | Cobalt(III) or Cobaltic ion |
