MCQ
Which one of the following complex is paramagnetic in nature?
- A$\left[ Ni ( CN )_4\right]^{4-}$
- B$\left[ Ni ( CO )_4\right]$
- ✓$\left[ Fe ( CN )_6\right]^{3-}$
- D$\left[ Ag ( CN )_2\right]^{-}$
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