Chapter 21, Problem 21.62SP

What is the coordination number of the metal in each of the following complexes?
(a) ${\text{AgCl}}_{\text{2}}{}^{-}$  (b) ${\left[\text{Cr}{\left({\text{H}}_{\text{2}}\text{O}\right)}_{\text{5}}\text{Cl}\right]}^{\text{2}+}$
(c) ${\left[\text{Co}{\left(\text{NCS}\right)}_{\text{4}}\right]}^{2-}$  (d) ${\left[{\text{ZrF}}_{\text{8}}\right]}^{\text{4}-}$
(e) ${\left[\text{Fe}\left(\text{EDTA}\right)\left({\text{H}}_{\text{2}}\text{O}\right)\right]}^{-}$