In the complex `[Co(NH_3)_(6)][CdCl_x]` the oxidation number of cobalt is +3 . The value of x is

In [Co(NH_3)_4C1_2]C1 the co-ordination number of cobalt is

In [Co(NH_3)_4 Cl_2]Cl the co-ordination number of cobalt is-

For the coordination complex ion [Co(NH_(3))_(6)]^(3+) . What is the oxidation number of cobalt in the complex ion?

Find the oxidation number of cobalt in K[Co(CO)_3 NH_3]