COMEDK · Chemistry · 24. Coordination Compounds
A complex compound in which the oxidation number of a metal is zero, is
- A \(\mathrm{K}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]\)
- B \(\mathrm{K}_{3}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]\)
- C \(\left[\mathrm{Ni}(\mathrm{CO})_{4}\right]\)
- D \(\left[\mathrm{Pt}\left(\mathrm{NH}_{3}\right)_{4}\right] \mathrm{Cl}_{2}\)
Answer & Solution
Correct Answer
(C) \(\left[\mathrm{Ni}(\mathrm{CO})_{4}\right]\)
Step-by-step Solution
Detailed explanation
The oxidation number of Ni metal is zero in complex \(\mathrm{Ni}(\mathrm{CO})_{4}\). As \(\mathrm{CO}\) is a neutral ligand i.e., \(\Rightarrow \mathrm{Ni}(\mathrm{CO})_{4}\) \(\begin{array}{r} x+4(0)=0 \\ x=0 \end{array}\)
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