The oxidation number of Fe in [Fe(CN)\(_6\)]\(^{3-}\) is

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Chemistry WAEC 2012

The oxidation number of Fe in [Fe(CN)\(_6\)]\(^{3-}\) is

  • +3 checkmark
  • +2
  • -2
  • -3

The correct answer is: A

Explanation

Let the oxidation number of Fe in the compound [Fe(CN)\(_6\)]\(^{3-}\) be x.

x + 6(-1) = -3

x - 6 = -3;

x = -3 + 6

x = +3

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