Chemistry - Coordination Chemistry Question with Solution | TestHub
How many of the following names are correct? (1) [Ni(CN)₄]²⁻: tetracyanidonickelate(II) ion. (2) [Pt(NH₃)₄][PtCl₄]: tetraammineplatinum(II) tetrachloridoplatinate(II). (3) [Fe(CO)₅]: pentacarbonyliron(III). (4) K₂[HgI₄]: potassium tetraiodidomercurate(II). (5) [Cu(NH₃)₄]SO₄: tetraamminecuprate(II) sulphate. (6) Na[Au(CN)₂]: sodium dicyanidoaurate(I). (7) [Co(en)₂Cl₂]Cl: dichloridobis(ethane-1,2-diamine)cobalt(III) chloride. (8) [Pt(NH₃)₆]Cl₄: hexaammineplatinum(IV) tetrachloride. (9) [Cr(H₂O)₄Cl₂]Cl: dichloridotetraaquachromium(III) chloride.
Answer:
Solution:
Correct: 1, 2, 4, 6, 7, 8. (3) is wrong because Fe in Fe(CO)₅ is 0. (5) is wrong because a cation takes the metal name, copper(II). (9) is wrong because ligands are in alphabetical order, so tetraaquadichlorido. Count = 6.
