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Old name of Cations transition metals
Thallium (III)
Tl 3+
Thallic
Thallium(I)
Tl+
Thallous
Lead(IV)
Pb 4+
Plumbic
Lead(II)
Pb 2+
Plumbous
ending in “ic” is
the larger positive charge
Tin(IV)
Sn 4+
Stannic
Tin(II)
Sn 2+
Stannous
Copper(II)
Cu 2+
Cupric
Copper(I)
Cu +
Cuprous
Chromium(III)
Cr 3+
Chromic
Chromium(II)
Cr 2+
Chromous
Iron(III)
Fe 3+
Ferric
Iron(II)
Fe 2+
Ferrous
Cobalt(III)
Co 3+
Cobaltic
Cobalt(II)
Co 2+
Cobaltous
ending in “ous”
smaller positive charge