Hg
2+^2 , mercury (I), mercurous
+2, mercury (II), mercuric
Cu
+ copper (I); cuprous
+3 copper (III); cupric
Ni
+2 nickelous
+3 nickelic
Fe
+2 ferrous
+3 ferric
Pb
+2 lead II; plumbous
+4 lead IV; plumbic
Bi
+3 Bismuth III; Bismuthous
+5 Bismuth V; Bismuthic
Sn
+2 tin II; stannous
+4 tin IV; stannic
Co
+2 cobalt II; cobaltous
+3 cobalt III; cobaltic
Sb
+3 antimonyous anitmony III
+5 Antimonyic antimony V
Cr
+2 chromium II chromium
+3 chromium III chromic
Au
+ gold I, aurous
+3 gold III, auric
As
+3 Arsenic III
+5 Arsenic V