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AP EAMCET · Chemistry · d and f Block Elements

The transition metal in which of the following compound has zero oxidation state.

  1. A \(\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7\)
  2. B \(\mathrm{KMnO}_4\)
  3. C \(\mathrm{CrO}_5\)
  4. D \(\mathrm{Fe}(\mathrm{CO})_5\)
Verified Solution

Answer & Solution

Correct Answer

(D) \(\mathrm{Fe}(\mathrm{CO})_5\)

Step-by-step Solution

Detailed explanation

Oxidation states of given transition metals are as follows \begin{array}{|c|c|c|} \hline S.No. & Compound & Oxidation state of metal \\ \hline \multirow[t]{4}{*}{1.} & \mathrm{~K}_2 \mathrm{Cr}_2 \mathrm{O}_7 & \begin{array}{l} 2(+1)+2(x)+7(-2)=0 \\ x=+6 \end{array} \\ \hline &…