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Manipal MET2024ChemistryCoordination Compounds

The oxidation state of Cr in [ Cr ( H ₂ O )₆ ] Cl ₃, [ Cr ( C ₆ H ₆ )₂ ] , K ₂ [ Cr ( CN )₂( O )₂ ( O ₂ ) ( NH ₃ ) ] respectively are

Options

  1. A+3,+4,+6
  2. B+3,+2,+4
  3. C+3,0,+6
  4. D+3,0,+4

Correct answer

C. +3,0,+6

Step-by-step solution

Oxidation state of Cr , aligned & In [ Cr ( H ₂O )₆ ] Cl ₃ & x+0 6-1 3=0 & x=3...(i) aligned [ Cr ( C ₆ H ₆ )₂ ] aligned & x+0 2=0 & x=0..(ii) aligned In K ₂ [ Cr ( CN )₂( O )₂ ( O ₂ ) ( NH ₃ ) ](1 2)+x-(1 2)-(2 2)-(1 2)-(0 1)=0x-6=0x=+6...(iii) Therefore, oxidation states are +3,0,+6 .

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