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Antimony
(III) Sb³+ & (V) SB^5+
Arsenic
(III) As³+ & (V) As^5+
Bismuth
(III) Bi³+ & (V) Bi^5+
Chromium
(II) Cr²+ & (III) Cr³+
Cobalt
(II) Co²+ & (III) Co³+
Copper
(I) Cu^1+ & Cu²+
Gold
(I) Au^1+ & (III) Au³+
Iron
(II) Fe²+ & (III) Fe³+
Lead
(II) Pb²+ & (IV) Pb^4+
Manganese
(II) Mn²+ & (IV) Mn^4+
Mercury
(I) Hg^1+ & (II) Hg²+
Nickel
(II) Ni²+ & (III) Ni³+
Nitrogen
(III) Ni³+ & (V) Ni^5+
Phosphorus
(III) P³+ & (V) P^5+
Tin
(II) Sn²+ & (IV) Sn^4+
Common Radicals and their Valence Numbers
Ammonium = NH4