Isomers are molecules that share the same formula and have:

a. a different arrangement of atoms within the molecule.
b. a different shape to the molecule.
c. the same shape in each molecule.
d. the same arrangement of atoms within the molecule.
e. identical boiling points.

A

Explanation:

Isomerism is a phenomena whereby two or more organic compounds have the same molecular formula but different structural arrangements.

This means the organic compounds may belong to different organic family but the main idea is that they have different structural and spatial arrangements but the same molecular formula. This means they have the same number of each atoms