If compound B is an isomer of compound A, then which of the following statements are true? W. compounds A and B have the same physical properties.
X. compounds A and B have the same chemical properties.
Y. compounds A and B have the same empirical formula.
Z. compounds A and B have the same molecular formula.
Solution: Isomers are molecules with the same molecular formula but different structure. Isomers have different physical and chemical properties since they are different molecules. Since molecular formula is the same, empirical formula is the same as well since it is the simplest form of the molecular formula. Choices Y and Z are correct.