Variable Valence for Transition Metals

part 2 of the chem cram

Chromium

Symbol	Charge	Stock Name
Cr	+2 +3	Chromium (II) Chromium (III)

Manganese

Symbol	Charge	Stock Name
Mn	+2 +3	Manganese (II) Manganese (III)

Iron

Symbol	Charge	Stock Name
Fe	+2 +3	Iron (II) Iron (III)

Cobalt

Symbol	Charge	Stock Name
Co	+2 +3	Cobalt (II) Cobalt (III)

Copper

Symbol	Charge	Stock Name
Cu	+1 +2	Copper (I) Copper (II)

Lead

Symbol	Charge	Stock Name
Pb	+2 +4	Lead (II) Lead (IV)

Mercury

Symbol	Charge	Stock Name
Hg	+1 +2	Mercury (I) (Hg22+) Mercury (II)

Tin

Symbol	Charge	Stock Name
Sn	+2 +4	Tin (II) Tin (IV)

Gold

Symbol	Charge	Stock Name
Au	+1 +3	Gold (I) Gold (III)

Silver

Symbol	Charge	Stock Name
Ag	+1 +2	Silver  Silver (II) (this is so rare that we don’t use a roman numeral for +1)

Bismuth

Symbol	Charge	Stock Name
Bi	+3 +5	Bismuth (III) Bismuth (V)

Antimony

Symbol	Charge	Stock Name
Sb	+3 +5	Antimony (III) Antimony (V)

Cadmium

Symbol	Charge	Stock Name
Cd	+2	Cadmium (no roman numeral because charge doesn’t change)

Zinc

Symbol	Charge	Stock Name
Zn	+2	Zinc (no roman numeral because charge doesn’t change)