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Question 25018
NEET Chemistry · Hard

Redox Reactions: Oxidation number MCQ

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Oxidation numberHardQuestion 25018

Question

Oxidation number of chromium in Cr2O72−Cr_2O_7^{2-} is:

  1. A
    +6
    Correct
  2. B
    +3
  3. C
    +7
  4. D
    +4

Correct answer

+6

Explanation

2x + 7(-2) = -2 gives x = +6.

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