Which of the following name formula combinations is not correct ? Formula Name (1) K[Cr(NH3)2Cl4] (III) Potassium diammine Tetrachlorochromate (2) [CO(NH3)4(H2OI)SO4 Tetraammine aquaiodo cobalt (III) sulphate (3) [Mn(CN)5]2- Pentacyanomagnate (II) ion (4) K2[pt(CN)4] Potassium tetracyanoplatinate(II)

Question

Which of the following name formula combinations is not correct ? Formula Name (1) K[Cr(NH3)2Cl4] (III) Potassium diammine Tetrachlorochromate (2) [CO(NH3)4(H2OI)SO4 Tetraammine aquaiodo cobalt (III) sulphate (3) [Mn(CN)5]2- Pentacyanomagnate (II) ion (4) K2[pt(CN)4] Potassium tetracyanoplatinate(II) (A) 1 (B) 2 (C) 3 (D) 4

Tardigrade Admin · Accepted Answer

Correct Name of [Mn (CN)5]2- is Pentacyanomagnate (III) ion.

Formula	Name
(1) $K [C r (N H_{3})_{2} C l_{4}]$ (III)	Potassium diammine Tetrachlorochromate
(2) $[CO (N H_{3})_{4} (H_{2} O I) S O_{4}$	Tetraammine aquaiodo cobalt (III) sulphate
(3) $[M n (CN)_{5}]^{2 -}$	Pentacyanomagnate (II) ion
(4) $K_{2} [pt (CN)_{4}]$	Potassium tetracyanoplatinate(II)

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Correct Name of [Mn(CN)5​]2− is Pentacyanomagnate (III) ion.

Correct Name of $[M n (CN)_{5}]^{2 -}$ is Pentacyanomagnate (III) ion.