An isomer of a particular molecule is
A)a molecule that has the same structure as the target molecule,but a different formula.
B)a molecule that is the same except it has an additional side group.
C)another copy of the same molecule.
D)a molecule that has the same formula,but a different structure.

Question

Quizplus · Accepted Answer

Isomers are molecules that have the same molecular formula but a different arrangement of atoms. This means that choice D, a molecule that has the same formula but a different structure, is the correct answer. Choice A is incorrect because if the formula is different then it is not an isomer. Choice B is incorrect because an additional side group changes the formula, and choice C is incorrect because it refers to an identical molecule, not an isomer.

An Isomer of a Particular Molecule Is