MCQ
The following square - planar complex shows cis - trans isomerism
- A$PtCl_4^{-2}$
- B$[PtCl_3(NH_3)]^-$
- ✓$[Pt Cl_2 (CN)_2]^{-2}$
- D$[PtCl_2 (en)]$
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$(A)\,{{C}_{8}}{{H}_{10}}\xrightarrow{KMn{{O}_{4}}}(B){{C}_{8}}{{H}_{6}}{{O}_{4}}\xrightarrow[Fe]{B{{r}_{2}}}{{C}_{8}}{{H}_{5}}Br{{O}_{4}}(C)$ (one-product only)