Iron(II) or ferrous
Fe2+
Iron(III) or ferric
Fe3+
Transition
Copper(II) or cupric
Cu2+
Transition
Copper(I) or cuprous
Cu+
Tansition
Zinc
Zn2+
Transition
Tin(II) or stannous
Sn2+
Transition
Silver
Ag+
Heavy
Lead or lead(II)
Pb2+
Heavy
Mercury(II) or mercuric
Hg2+
Heavy