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Formulae of six named complexes

Short answer

a. Na₄[Fe(CN)₆] b. [Co(NH₃)₆]Cl₃ c. [Co(NH₃)₄BrCl]₂SO₄ d. [AlF₆]³⁻ e. K₂[ZnCl₄] f. Fe[PtBr₄].

Write the formulae of the following co-ordination compounds. a. Sodium hexacyanoferrate (II) b. Hexaamminecobalt (III) chloride c. Bromochlorotetraamminecobalt (III) sulfate d. Hexafluoroaluminate (III) ion e. Potassium tetrachlorozincate (II) f. Iron (II) tetrabromoplatinate (II)

a. Sodium hexacyanoferrate(II): Na₄[Fe(CN)₆] b. Hexaamminecobalt(III) chloride: [Co(NH₃)₆]Cl₃ c. Bromochlorotetraamminecobalt(III) sulfate: [Co(NH₃)₄BrCl]₂SO₄ (the cation is +1: Co³⁺ + Br⁻ + Cl⁻) d. Hexafluoroaluminate(III) ion: [AlF₆]³⁻ e. Potassium tetrachlorozincate(II): K₂[ZnCl₄] f. Iron(II) tetrabromoplatinate(II): Fe[PtBr₄]

In the formulae, the cation is written first, ligands inside the bracket follow the metal symbol, and the total charge is balanced.

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