Questions

Which of the following name formula combinations is not correct?

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K_{2} [Pt (CN)_{4}]

Potassium tetracyanoplatinate(II)

{[Mn (CN)_{5}]}^{2 -}

Pentacyanomagnate(II) ion

K [Cr {({NH}_{3})}_{2} {Cl}_{4}]

Potassium diamminetetrachlorochromate(III)

[Co {({NH}_{3})}_{4} (H_{2} O) I] {SO}_{4}

Tetraammine aquaiodocobalt(III) sulphate

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detailed solution

Correct option is B

${[Mn (CN)_{5}]}^{2 -}$ is pentacyanomangnate(III) ion. The IUPAC name of the compound ${[Mn (CN)_{5}]}^{2 -}$ is Pentacyanomanganate(III) ion as the oxidation number of manganese is +3.

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