Chemistry Ion List
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1
2CHEM 131 Ion List
TABLE 1
COMMON CATIONS AND THEIR OXIDATION NUMBERS
1+
2+
3+
4+
Group IA
Group IIA
Group IIIA
+
2+
NH
ammonium
Cd
cadmium
4
+
2+
Cu
copper (I) or
Cu
copper (II) or
cuprous
cupric
3+
Cr
chromium (III) or
chromic
2+
3+
Co
cobalt (II) or
Co
cobalt (III) or
cobaltous
cobaltic
2+
3+
Fe
iron (II) or ferrous
Fe
iron (III) or ferric
2+
2+
Hg
mercury (I) or
Hg
mercury (II) or
2
+
+
mercurous (
Hg–Hg
)
mercuric
2+
Ni
nickel (II) or
nickelous
2+
4+
Pb
lead (II) or
Pb
lead (IV) or
plumbous
plumbic
2+
Pd
palladium or
palladous
+
Ag
silver
2+
4+
Sn
tin (II) or stannous
Sn
tin (IV) of stannic
2+
Zn
zinc
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