Redox Reactions And Electrochemistry Ques 659

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

Options:

A) $ {{[MnO_4]}^{-}} $

B) $ {{[ Cr{{( CN )}_6} ]}^{3-}} $

C) $ Cr_2O_3 $

D) $ CrO_2Cl_2 $

Show Answer

Answer:

Correct Answer: D

Solution:

[d] $ CrO_2Cl_2 $ Let O. No. of $ Cr=x $
$ \therefore x+2( -2 )+2( -1 )=0 $ $ x-4-2=0 $
$ \therefore x=+6 $



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