Specify the number of unpaired electrons for each of the species shown below.

Question

CuCl2- (linear)
Ni(NH36) 2+
NiCl4 2- (tetrahedral)
CoF6 3- (weak field)
Co(en)3 3+ (strong field) (en = "ethylene diamine")

Would it be:
1
2
2
3
3
??

Answer 1

I think this is just too difficult to try to draw on these boards. Your best bet is to read in your book. You need to cover Lewis structures and complex ions.