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Oxides and Oxoanions

Name the oxom...

Question

Name the oxometal anions of the first series of the transition metals in which the metal exhibits the oxidation state equal to its group number.

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Solution

$M n O_{4}^{-} :$ Mn has +7 oxidation number and group number is 7.

$C r O_{4}^{2 -} :$ Cr has +6 oxidation state and group number is 6.

${V O}_{3}^{-} :$ V has +5 oxidation state and the group number is 5.

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