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Question
[Fe(CN)6]4− is a coordination complex ion.
Calculate the oxidation number of iron in the complex.
Numerical
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Solution
x + 6(−1) = −4
x − 6 = −4
x = −4 + 6
∴ x = +2
∴ The oxidation number of iron in [Fe(CN)6]4− is +2.
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Ionic Equilibria - Common Ion Effect Example
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