For each of the following complexes, give the oxidation state of the metal and its d" configuration:
(a) [Mn(CN)₆]⁴⁻
(b) (FeCl₄]²⁻
(c) (CoCl₃ (py)₃]
(d) [Re0₄]
(e) [Ni(en)₃]²⁺
(f) (Ti(OH₂)₆]³⁺
(g) [VCl₆]³⁻
(h) (Cr(acac)₃]