AP BIOLOGY

Detailed explanation-1: -Which of the following is true about structural isomers? Structural isomers have the same molecular formula. Structural isomers have different physical and chemical properties.

Detailed explanation-2: -Explanation: n−butane and iso−butane are the correct structural isomers of butane.

Detailed explanation-3: -The correct answer is option B. Isomers are the compounds in which the molecular formula of the compounds are the same, but the arrangement or orientation of atoms or groups are different.

Detailed explanation-4: -Structural Isomers A structural isomer, also known as a constitutional isomer, is one in which two or more organic compounds have the same molecular formulas but different structures.