COMEDK · Chemistry · 24. Coordination Compounds
In which of the following complex ion, the central metal ion is in a state of \(s p^{3} d^{2}\) hybridisation?
- A \(\left[\mathrm{CoF}_{6}\right]^{3-}\)
- B \(\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}\)
- C \(\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{3-}\)
- D \(\left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}\)
Answer & Solution
Correct Answer
(A) \(\left[\mathrm{CoF}_{6}\right]^{3-}\)
Step-by-step Solution
Detailed explanation
In \(\left[\mathrm{CoF}_{6}\right]^{3-}, \mathrm{F}^{-}\)is a weak ligand. It cannot pair up \(d\)-electrons and form outer orbital octahedral complex while \(\mathrm{NH}_{3}\) and \(\mathrm{CN}^{-}\)are strong ligand. In \(\left[\mathrm{CoF}_{6}\right]^{3-}\), outer orbital…
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