A) \[MnO_{4}^{-}\]
B) \[Cr(CN)_{6}^{3-}\]
C) \[NiF_{6}^{2-}\]
D) \[Cr{{O}_{2}}C{{l}_{2}}\]
Correct Answer: D
Solution :
\[\overset{*\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{Cr{{O}_{2}}C{{l}_{2}}}}\,\], \[x-4-2=0,\,x=+6\].
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