I understand how to find the valency of atoms in small organic compounds. For instance, for CH4, the valency of carbon is 4, while the valency of each hydrogen is 1. But for a coordination complex, for instance:
How do I find the valency of the center metal?
How would the valency calculation change, if at all?
I need the valency of these transition metals because I wish to ultimately find the d^n configuration of the transition metal in the complex via the formula:
n = group number - valency
EDIT: If you have a different approach (apart from using valency) for finding the d^n configuration of the transition metal, feel free to suggest that instead.