In which of the following compounds does the | vedclass

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(D) Solution:$(1)$ In options $B$ and $C$,there are no transition metals,so they are eliminated.$(2)$ In $CrO_5$ (chromium pentoxide),the oxidation st

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$[Fe(CO)_5]$

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(D) Solution:$(1)$ In options $B$ and $C$,there are no transition metals,so they are eliminated.$(2)$ In $CrO_5$ (chromium pentoxide),the oxidation state of $Cr$ is $+6$ due to the presence of peroxo linkages.$(3)$ In $[Fe(CO)_5]$,carbon monoxide $(CO)$ is a neutral ligand. Since the overall charge of the complex is zero,the oxidation state of $Fe$ is calculated as $x + 5(0) = 0$,which gives $x = 0$.

In which of the following compounds does the transition metal have a zero oxidation state?

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