1) The pair(s) of coordination complexes/ions exhibiting the same kind of isomerism is (are) A) $[Cr(NH_{3})_{5}Cl]Cl_{2} and [Cr(NH_{3})_{4}Cl_{2}]Cl$ B) $[Co(NH_{3})_{4}Cl_{2}]^{+} and [Pt(NH_{3})_{2}(H_{2}0)Cl]^{+}$ C) $[CoBr_{2}Cl_{2}]^{2+} and [PtBr_{2}Cl_{2}]^{2-}$ D) $[Pt(NH_{3})_{3}NO_{3}]Cl and [Pt(NH_{3})_{3}Cl]Br$ Answer: Option B,DExplanation:Plan Depending on the structure of the complex, different type of isomerism are shown.