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(D) In a redox reaction,an oxidising agent accepts electrons and undergoes reduction.For a metal carbonyl complex to act as an oxidising agent,it shou

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$[V(CO)_6]$

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(D) In a redox reaction,an oxidising agent accepts electrons and undergoes reduction.For a metal carbonyl complex to act as an oxidising agent,it should ideally have an $EAN$ (Effective Atomic Number) less than the atomic number of the nearest noble gas to achieve stability by gaining an electron.For $[V(CO)_6]$,the $EAN$ is calculated as: $V$ $(Z=23)$ + $6 	imes 2$ (from $CO$) = $23 + 12 = 35$.The nearest noble gas is Krypton $(Kr)$ with $Z=36$.Since $35 < 36$,the complex $[V(CO)_6]$ readily accepts an electron to form $[V(CO)_6]^-$,which has an $EAN$ of $36$,thereby acting as an oxidising agent.

$LIST-I$ (Substances)	$LIST-II$ (Element Present)
$A$. Ziegler catalyst	$I$. Rhodium
$B$. Blood pigment	$II$. Cobalt
$C$. Wilkinson catalyst	$III$. Iron
$D$. Vitamin $B_{12}$	$IV$. Titanium

Among the following complexes,which one can act as an oxidising agent?

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$LIST-I$ (Substances) $LIST-II$ (Element Present)

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