MCQ
The complex that can show optical activity is:
- Atrans- $\left[ Fe \left( NH _{3}\right)_{2}( CN )_{4}\right]^{-}$
- B$\operatorname{cis}\left[ Fe \left( NH _{3}\right)_{2}( CN )_{4}\right]^{-}$
- ✓$\operatorname{cis}-\left[\operatorname{CrCl}_{2}(\operatorname{ox})_{2}\right]^{3-}($ ox $=$ oxalate $)$
- D$\operatorname{trans}-\left[\operatorname{Cr}\left( Cl _{2}\right)( ox )_{2}\right]^{3-}$
