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Q 2661501425.     (i) Write the IUPAC name of the complex `[Cr(NH_3)_4 Cl_2]Cl`.
(ii) What type of isomerism is exhibited by the complex `[Co (en)_3]^(3+)`?
(iii) Why is `[NiCl4]^(2-)` paramagnetic but `[Ni (CO)_4]` is diamagnetic?
(At. nos. : Cr = 24, Co = 27, Ni = 28)
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)