Constitutional isomers differ in what aspect?

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Study for the IMAT Chemistry Exam. Access flashcards and multiple choice questions; hints and explanations included for each question. Prepare effectively for your exam.

Multiple Choice

Constitutional isomers differ in what aspect?

Explanation:
Constitutional (structural) isomerism is about molecules that share the same molecular formula but have different connections among their atoms. In other words, the atoms are linked in a different order, giving distinct structures. An exact example is C4H10, which can be n-butane or isobutane—they have the same formula but different carbon skeletons, so they are different compounds. This is distinct from stereoisomers, where the connectivity is the same but the spatial arrangement differs. The option describing the same formula with a different connectivity matches this idea best.

Constitutional (structural) isomerism is about molecules that share the same molecular formula but have different connections among their atoms. In other words, the atoms are linked in a different order, giving distinct structures. An exact example is C4H10, which can be n-butane or isobutane—they have the same formula but different carbon skeletons, so they are different compounds. This is distinct from stereoisomers, where the connectivity is the same but the spatial arrangement differs. The option describing the same formula with a different connectivity matches this idea best.

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