Which of the following name formula combinations is not correct?

A
$K_{2} [Pt (CN)_{4}]$ Potassium tetracyanoplatinate(II)
B
${[Mn (CN)_{5}]}^{2 -}$ Pentacyanomagnate(II) ion
C
$K [Cr {({NH}_{3})}_{2} {Cl}_{4}]$ Potassium diamminetetrachlorochromate(III)
D
$[Co {({NH}_{3})}_{4} (H_{2} O) I] {SO}_{4}$ Tetraammine aquaiodocobalt(III) sulphate

Solution:

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

Solution:

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