1) Indicate the coordination and oxidation number of the metal for K3[Co(CN)6]
2) Indicate the coordination and oxidation number of the metal for Na2[CdBr4].
3) Indicate the coordination and oxidation number of the metal for [Pt(en)3](ClO4)4.
4) Indicate the coordination and oxidation number of the metal for [Co(en)2(C2O4)]+.
5) Indicate the coordination and oxidation number of the metal for NH4[Cr(NH3)2(NCS)4].
6) Indicate the coordination and oxidation number of the metal for [Cu(bipy)2I]I.