3. (Attempt as much of this as you can and these may be "rolled over" into next week). Draw the following complex ions with the correct geometry. Also state (a) the charge and the number of d electrons on the metal ion, (b) the coordination number of the metal ion: (a) [Co(NH3)6]SO4 (Hint: Determine the charge on the complex ion from the counter ion) (b) Ca[NiF4] (Same hint as above) (c) [Cu(CN)4]2 (no counter ion shown in this and the remaining examples) (d) trans [CrBr2(NH3)4]+ (e) [Co(ox)3]3 (f) [Ag(SH2)2]+