CHM431Make-up Quiz

Berry pseudo-rotation occurs in complexes with coordination number

• 6

• 5

• 4

• 3

Square planar complexes are formed by --- metal ions  

• d⁴ 

• d⁶ 

• d⁸

• d¹⁰

What is the geometry of [NiCN₄]^2- ?

• Square planar

• Tetrahedral

• Octahedral

• Square pyramidial

Identify the complex ion with a different geometry

• [PtCl₄]^2-

• [AuCl₄]^-

• [NiCl₄]^2-

• [PdCl₄]^2-

Which  of the following can exhibit cis-trans isomerism?

• [Zn(en)Cl₂]

• [Pt(en)Cl₂]

• [Pt(en)₂Cl₂]²⁺ 

• [Cr(en)₂(ox)]+

Identify the bidentate chelating ligand.

• Oxalate ion

• 4,4’-bipyridine

• diethylenetriamine

• isothiocyanate ion

In an inner sphere reaction  ----

• electron transfer occurs through the solvent

• the coordination sphere of both ions remain intact  

• there is ligand exchange between both reacting partners

• the coordination sphere of both species remain intact

In an associative reaction, the incoming ligand forms a bond with the metal before the leaving group departs

• Always true

• Sometimes true

• False

The rate determining step in the substitution of an octahedral complex is

• inner step

• association step

• dissociation step

• interchange step

The most stable complex ion is .....

• [Fe(H₂O)₆]³⁺

• [Fe(C₂O₄)₃]^3-

• [Fe(NH₃)₆]³⁺

• [FeCl₆]^3-