For the following multiple choice questions, choose the right answer giving reasons for your choice (use elimination process to arrive at the correct answer) Q4. Which one of the following complexes can exhibit geometrical isomerism? (5pts) (a) [Pt(NH3)2Cl2] (square planar) (b) [Zn(NH3)2Cl2] (tetrahedral) (c) [Cu(NH3)4]2+ (square planar) (d) [Co(NH3)5Cl]2+( octahedral) (e) [Cu(CN)2] (linear) Q5. In which one of the following species does the transition metal ion have d3 electronic configuration? (a) [Cr(NH3)6]3+ (b) [Co(OH2)6]2+ (5pts) (c) [CoF6]3 (d) [Fe(CN)6]3 (e) [Ni(OH2)6]2+