Question

what is the structure of 1,1,2 - trichloroethane? more than one of the structures is 1,1,2 - trichloroethane.

Explanation:

The name 1,1,2 - trichloroethane indicates an ethane (2 - carbon) molecule with three chlorine atoms, two on the first carbon and one on the second carbon. The first structure has two chlorine atoms on the first carbon and one on the second carbon of the ethane backbone. The second and third structures have incorrect carbon - chain lengths and arrangements for ethane.

Answer:

First structure (the one with two Cl on one C and one Cl on the adjacent C of the two - carbon ethane chain)