Which of the following transition metals is u | vedclass

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(D) Transition metals and their compounds are known for their catalytic activity due to their ability to adopt multiple oxidation states and form comp

Vedclass · Accepted Answer

Both $A$ and $B$

Vedclass · Answer

(D) Transition metals and their compounds are known for their catalytic activity due to their ability to adopt multiple oxidation states and form complexes.$Ni$ (Nickel) is widely used as a catalyst in hydrogenation reactions (e.g.,Sabatier-Senderens process).$Co$ (Cobalt) is also used as a catalyst in various industrial processes,such as the hydroformylation of alkenes (oxo process).Therefore,both $A$ and $B$ are correct.

List-$I$	List-$II$
$A$. Oxidation state of $V$ in $VOCl_2$	$I$. $0$
$B$. Number of unpaired electrons in $MnO_4^{2-}$ ion	$II$. $1$
$C$. Number of unpaired electrons in $[NiCl_4]^{2-}$ ion	$III$. $5$
$D$. This oxidation state is exhibited by all lanthanide ions	$IV$. $3$
	$V$. $4$
	$VI$. $2$

Which of the following transition metals is used as a catalyst?

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