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NEET 2014
Exam
NEET
Year
2014
Subject
Chemistry
Chapter
d and f Block Elements

NEET 2014 · Chemistry · d and f Block Elements

In acidic medium, H _ 2 O _ 2 changes C r _ 2 O _ 7 ^ - 2 to Cr O _...

In acidic medium, H2O2{H}_{2}{O}_{2} changes Cr2O7−2toCrO5C{r}_{2}{O}_{7}^{- 2} to Cr{O}_{5} which has two (−O−O−)\left(- O - O -\right) bonds Oxidation state of CrinCrO5Cr in Cr{O}_{5} is:In acidic medium, H _ 2 O _ 2 changes C r _ 2 O _ 7 ^ - 2 to Cr O _ 5 which has two (- O - O -) bonds Oxidation state

Options

  1. A+5+ 5
  2. B+3+ 3
  3. C+6+ 6
  4. D−10- 10

Correct answer

C. +6+ 6

Step-by-step solution

Chromium forms six bonds with the oxygen atoms and oxygen is more electronegative than the chromium. Due to this chromium shows oxidation state in CrO5{CrO}_{5} is +6+ 6.

In acidic medium, H _ 2 O _ 2 changes C r _ 2 O _ 7 ^ - 2 to Cr O _ 5 which has two (- O - O -) bonds Oxidation state

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