Some Basic Concepts of Chemistry 2 Question 16
16. Among the following, the species in which the oxidation number of an element is +6
(2000)
(a) $\mathrm{MnO}_{4}^{-}$
(b) $\mathrm{Cr}(\mathrm{CN})_{6}^{3-}$
(c) $\mathrm{NiF}_{6}^{2-}$
(d) $\mathrm{CrO}{2} \mathrm{Cl}{2}$
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Solution:
- In $\mathrm{MnO}_{4}^{-}$, oxidation state of $\mathrm{Mn}$ is +7
In $\mathrm{Cr}(\mathrm{CN})_{6}^{3-}$, oxidation state of $\mathrm{Cr}$ is +3
In $\mathrm{NiF}_{6}^{2-}, \mathrm{Ni}$ is in +4 oxidation state.
In $\mathrm{CrO}{2} \mathrm{Cl}{2}$, oxidation state of $\mathrm{Cr}$ is +6 .
