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[Solved] Isomerism

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Among the complex ions given below,

[Co(NH2 – CH2 – CH2 – NH2)2Cl2]+,

[CrCl2(C2O4)2]3-,

[Fe(H2O)4(OH)2]+,

[Fe(NH3)2(CN)4],

[Co(NH2 – CH2 – CH2 – NH2)2(NH3)Cl]2+ and

[Co(NH3)4(H2O)Cl]2+],

The number of complex ion(s) that show(s) cis-trans isomerism is(are).

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This question belongs to inorganic chemistry coordination compounds. In coordination compounds geometrical isomerism is shown by disubstituted square planar and octahedral compounds. Complexes given here are octahedral 

First and second [M(AA)2b2] type  --- b,b can be adjacent (cis) or diagonal (trans)

third and fourth [Ma4b2] type --- b,b can be adjacent (cis) or diagonal (trans)

fifth [M(AA)2bc] type  --- b,c can be adjacent (cis) or diagonal (trans)

sixth [Ma4bc] type --- b,c can be adjacent (cis) or diagonal (trans)

All complexes here can show geometrical isomerism.

 

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