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KCET2012ChemistryCoordination Compounds

The atomic number of cobalt is 27. The EAN of cobalt in Na ₃ [ Co ( NO ₂ )₄ Cl ₂ ] is

Options

  1. A24
  2. B36
  3. C34
  4. D35

Correct answer

B. 36

Step-by-step solution

EAN of Co in Na ₃ [ Co ( NO ₂ )₄ Cl ₂ ] = Atomic number of Co oxidation state of Co + number of e ⁻ taken from - NO ₂ and - Cl =27+3+(4+2)=36

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