MCQ
The complex that can show optical activity is:
  • A
    trans- $\left[ Fe \left( NH _{3}\right)_{2}( CN )_{4}\right]^{-}$
  • 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
    $\operatorname{trans}-\left[\operatorname{Cr}\left( Cl _{2}\right)( ox )_{2}\right]^{3-}$

Answer

Correct option: C.
$\operatorname{cis}-\left[\operatorname{CrCl}_{2}(\operatorname{ox})_{2}\right]^{3-}($ ox $=$ oxalate $)$
c

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