Consider the 1,2-Dichloro Derivative of Ethylene, in Which One of the Hydrogen

question 146

Multiple Choice

Consider the 1,2-dichloro derivative of ethylene, in which one of the hydrogen atoms on each of the carbon atoms in ethylene is substituted with a chlorine atom, giving the structural formula CHClCHCl. Does this molecule have geometrical isomers? Remember that ethylene does not.

• A)Yes, because the chlorines can be placed on the same or opposite sides of the double bond.
• B)Yes, because the chlorines can be placed on either one or both of the carbons.
• C)No, because both the formula and bonds are the same in all skeletal structures.
• D)No, because the two structures can interconvert through bond rotation.
• E)No, because there are less than four atoms bound to each carbon.

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