Step 1: Understand what isomerism means. Isomerism is when two or more compounds have the same formula but different structures.
Step 2: Identify the structure of 2-pentene. It has a double bond between the second and third carbon atoms.
Step 3: Recognize that double bonds can create different arrangements of atoms. This is where geometric isomerism comes in.
Step 4: Learn about the two types of geometric isomers: cis and trans. In cis isomers, similar groups are on the same side of the double bond, while in trans isomers, they are on opposite sides.
Step 5: Conclude that 2-pentene can exist as both cis-2-pentene and trans-2-pentene, which means it exhibits geometric isomerism.
