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Questions
Specify the oxidation number of the metal in the following coordination entity:
K3[Fe(CN)6]
Calculate the oxidation number of Fe in K3[Fe(CN)6].
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Solution
Let the oxidation number of iron (Fe) be x.
Hence, 3 × (+1) + x + 6 × (−1) = 0
(+3) + x + (−6) = 0
3 + x − 6 = 0
x − 3 = 0
∴ x = +3
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