MCQ
The complexes given below show :


- AOptical isomerism
- BCo-ordination isomerism
- ✓Geometrical isomerism
- DBridged isomerism

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$(I)$ cis $- [Co(NH_3)_2(en)_2]^{3+}$ $(II)$ trans $-[IrCl_2(C_2O_4)_2]^{3-}$
$(III)\, [Rh(en)_3]^{3+}$ $(IV)$ cis $-[Ir(H_2O)_3Cl_3$