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WBJEE Oxidation State — practice questions

Explore 1 free Oxidation State questions in WBJEE Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Oxidation State questions and exercises with answers

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The **oxidation state of Fe** in $K_4[Fe(CN)_6]$ is:Read the answer and worked solution →

Worked practice questions

The **oxidation state of Fe** in $K_4[Fe(CN)_6]$ is:

  1. +1
  2. +2
  3. +3
  4. +4
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Correct answer: B. +2

**Charge balance:** 4(+1) + [Fe + 6(-1)] = 0 We have ⇒ Fe + (-6) = -4 ⇒ Fe. So ⇒ Fe + (-6) = **+2**. K₄[Fe(CN)₆] is potassium ferrocyanide.

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