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NEET2018ChemistryCoordination CompoundsActual

In the complex, [ Cr ( NH ₃ )₄ Cl ₂ ]⁺ , the oxidation number of Cr is

Options

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

Correct answer

B. +3

Step-by-step solution

Let the oxidation number of Cr is x in the complex [ Cr ( NH ₃ )₄ Cl ₂ ]⁺ aligned X +4 (0)+2 (-1) & =+1 x-2 & =+1 x & =+3 aligned Thus, the oxidation number of Cr is +3 .

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