. Which of the following pairs of name and formula of complexes, is incorrect


A. Tetramminecopper(II) sulphate............. [Cu(NH3)4]SO4 

B. Diamminesilver(I) chloride ................ [Ag(NH3)2]Cl

C. Potassium hexacyanidoferrate (III) ............... K4[Fe(CN)6]

D. Potassium amminepentachloridoplatinate (IV) ................. K[PtCl5(NH3)]

Best Answer

Ans: C

Sol: It is not correct formula because the Fe is in +3 oxidation state and as such formula should be [Fe3+(CN)6]3– or K3[Fe(CN)6].

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