Final answer:
1,2-dichloroethane does not occur readily at room temperature and exists as a liquid due to its boiling point and melting point.
Step-by-step explanation:
1,2-dichloroethane does not occur readily at room temperature. It is a liquid at room temperature because it has a boiling point of 83.5 °C (182.3 °F) and a melting point of -35 °C (-31 °F). At room temperature, it would exist as a liquid.