Discuss the chemistry of the peroxo complexes of chromium(IV), (V), and (VI). (b) Discuss the electronic...

Discuss the chemistry of the peroxo complexes of chromium(IV), (V), and (VI). (b) Discuss the electronic structure of Mn(III) compounds. (c) Discuss using suitable examples, the chemistry of manganese(IV) complexes.

Expert Solution

a)Chemistry of the Peroxo chromates:
peroxochromate is prepared by reacting hydrogen peroxide with metal chromate at low temperatures
2CrO₄^2- + 8H₂O₂ -----------> 2[Cr(O₂)₄]^2- + 8H₂O
[Cr(O₂)₄]^2- is called tetraperoxochromate with oxidation number +4 and is reduced by hydrogen peroxide,which results in forming tetraperoxochromate(V)
2[Cr(O₂)₄]^2- + H₂O₂ + 2OH^- -----------> 2[Cr(O₂)₄]^3- + 2H₂O + O₂
From this reaction [Cr(O₂)₄]⁴^- can also form which is unstable and has oxidaation number +6

b) Electronic structure of Mn(III) compunds:
   electronic configuration of Mn⁺³ is [Ar]3d⁴
c) Chemistry of Manganese (IV) complexes:
   The +3 oxidation state compounds of Manganese complexes, are quite powerful oxidizing agents in aqueous solutions and also disproptionate forming manganese(II) and manganese(IV) complexes.

queen_honey_blossom answered 1 year ago

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