The oxidation number of \( \mathrm{Cr}=+6 \) in (A) \( \mathrm{FeCr}_{2} \mathrm{O}_{4} \) (B) \...
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The oxidation number of \( \mathrm{Cr}=+6 \) in
(A) \( \mathrm{FeCr}_{2} \mathrm{O}_{4} \)
(B) \( \mathrm{KCrO}_{3} \mathrm{Cl} \)
(C) \( \mathrm{CrO}_{5} \)
(D) \( \left[\mathrm{Cr}(\mathrm{OH})_{4}\right]^{-} \)
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