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Geometrical isomerism is possible in:
- (a) [Co(NH₃)₆]³⁺
- (b) [CoCl₂(en)₂]⁺
- (c) [Co(NH₃)₅Cl]²⁺
- (d) [Co(NH₃)₄Cl₂]³⁺
Answer and solution
Answer (d) [Co(NH₃)₄Cl₂]³⁺
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