* Isomers: Isomers are molecules that have the same molecular formula but different structural formulas. This means they have the same number of each type of atom, but those atoms are arranged differently in space.
* C3H6: The molecular formula C3H6 corresponds to propene (an alkene), which has a double bond between two carbon atoms.
* C6H12: The molecular formula C6H12 could represent several different isomers, including hexane (an alkane) and cyclohexane (a cyclic alkane).
Therefore, compound X (propene) and compound Y (a possible isomer of C6H12 like hexane or cyclohexane) are isomers because they have the same molecular formula but different structures.
