MCQ
Find out the correct pair :
- ✓$\left[ Ni ( CO )_4\right],\left[ Ni Cl _4\right]^{2-}$
- B$\left[ Cu Cl _2\right],\left[ Fe ( CO )_5\right]$
- C$\left[ Fe F _6\right]^{4-},\left[ Fe ( CN )_6\right]^{2-}$
- D$\left[ Ni ( CO )_4\right],\left[ Hgl _3\right]^{-}$