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MHT CET2012Chemistryd and f Block Elements

The oxidation state of Cr in K ₂ Cr ₂ O ₇ is

Options

  1. A+4
  2. B+3
  3. C+6
  4. D+5

Correct answer

C. +6

Step-by-step solution

K ₂ Cr ₂ O ₇ Let the oxidation state of Cr is x . aligned 2(+1)+2 x+7(-2) &=0 +2+2 x-14 &=0 2 x-12 &=0 x &=+6 aligned

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