1.

Which of the following arrangements represent increasing oxidation number of the central atom?

Answer»

Solution :Writing the O.N of Cr CI and Mn on each SPECIES in the foiur set of IONS we have
(a) `CrO_(2)^(-) ,CIO_(3)^(-),CrO_(4)^(2-), MnO_(4)^(-)`
(b) `CIO_(3)^(-),CrO_(4)^(2-),MnO_(4)^(-),CrO_(2)^(-)`
(c ) `CrO_(2)^(-),CIOO_(3),MnO_(4)^(-),CrO_(4)^(2-)`
(d) `CrO_(4)^(2-), MnO_(4)^(-), CrO_(2)^(-),CIO_(3)^(3)`
only in arrangement (a) the O.N of CENTRAL ATOM incrases form left to right therefore OPTION (a) is correct


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