question_answer 15)

Specify the oxidation numbers of the metals in the following coordination entities : (i) [Co(H­2O)(CN) (en)2]2+              (ii) [CoBr2(en)2]+ (iii) [PtCl4]2-                                        (iv) K3[Fe(CN)6] (v) [Cr(NH3)3Cl3]

Answer:

(i) + 3 (ii) +3 (iii) +2 (iv) +3 (v) +3