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← JEE Main 2014 · 19 Apr · Shift 1
ChemistrySingle correct+4 / -1Question 49 of 90

JEE Main 2014 · 19 Apr · Shift 1, Chemistry question 49

Amongst the following, identify the species with an atom in +6 oxidation state :

Choose one option
Answer and worked solution

Official answer: D

Oxidation states:

  • MnOX4X−\ce{MnO4-}: Mn +7.
  • [Cr(CN)X6]X3−\ce{[Cr(CN)6]^3-}: Cr +3.
  • CrX2OX3\ce{Cr2O3}: Cr +3.
  • CrOX2ClX2\ce{CrO2Cl2}: Cr x−4−2=0x-4-2=0, so x=+6x=+6.
Topics:Oxidation number
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