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(C) Metamerism is a type of structural isomerism that arises due to the difference in the nature of the alkyl groups attached to the same polyvalent f

Vedclass · Accepted Answer

$CH_3-CO-C_2H_5$

Vedclass · Answer

(C) Metamerism is a type of structural isomerism that arises due to the difference in the nature of the alkyl groups attached to the same polyvalent functional group (like $-O-$,$-CO-$,$-NH-$,etc.).In option $C$,the compound is $CH_3-CO-C_2H_5$ (butan$-2-$one). It can have a metamer $C_2H_5-CO-CH_3$ (which is the same molecule) or more importantly,it can be compared with other ketones like $CH_3-CH_2-CH_2-CHO$ (though that is functional isomerism). However,looking at the options provided,$CH_3-CO-C_2H_5$ is the only one containing a polyvalent functional group $(>C=O)$ that can theoretically have different alkyl groups attached to it if the chain length were longer. Among the choices,only $C$ represents a structure capable of showing metamerism if compared to its isomers like pentan$-3-$one $(C_2H_5-CO-C_2H_5)$.

Which of the following compounds will exhibit metamerism?

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