Which of the following compounds is a metamer of pentan-2-one?

Step-by-step solution

Pentan-2-one ( CH ₃- CO - CH ₂ CH ₂ CH ₃ ) has a methyl group and an n-propyl group attached to the polyvalent carbonyl ( - CO - ) group. Metamerism arises due to different alkyl chains on either side of the polyvalent functional group in the molecule. Pentan-3-one ( CH ₃ CH ₂- CO - CH ₂ CH ₃ ) has two ethyl groups attached to the carbonyl group. Since the distribution of alkyl groups around the functional group is different, it is a metamer of pentan-2-one. 3-Methylbutan-2-one has a different principal carbon chai