(Stock
system)
Symbol
(Stock system)
Common
Symbol
Common
Cu+
copper(I)
cuprous
Hg22+
mercury(I)
mercurous
Cu2+
copper(II)
cupric
Hg2+
mercury(II)
mercuric
Fe2+
iron(II)
ferrous
Pb2+
lead(II)
plumbous
Fe3+
iron(III)
ferric
Pb4+
lead(IV)
plumbic
Sn2+
tin(II)
stannous
Co2+
cobalt(II)
cobaltous
Sn4+
tin(IV)
stannic
Co3+
cobalt(III)
cobaltic
Cr2+
chromium(II)
chromous
Ni2+
nickel(II)
nickelous
Cr3+
chromium(III)
chromic
Ni4+
nickel(IV)
nickelic
Mn2+
manganese(II)
manganous
Au+
gold(I)
aurous
Mn3+
manganese(III)
manganic
Au3+
gold(III)
auric