The substitutents are: - 2 chloros. (The 2 chlorum atoms.)
Work Step by Step
1. Identify the parent chain: In this case, since there are no bifurcations, the parent chain is the connection between all carbons: 2. Check the atoms, or groups, that are left: - 2 Chlorines 3. Give they the proper name: - Chlorines receive the name "chloro" as a substituent.