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The lowest alkene which is capable of exhibiting geometrical isomerism is?
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The lowest alkene which is capable of exhibiting geometrical isomerism...
The Lowest Alkene Capable of Geometrical Isomerism


The lowest alkene which is capable of exhibiting geometrical isomerism is ethene (C2H4).


Explanation


Geometrical isomerism, also known as cis-trans isomerism, occurs when there is restricted rotation around a double bond. This results in two different three-dimensional arrangements of the atoms on each side of the double bond. In order for a molecule to exhibit geometrical isomerism, it must have:



  • A double bond between two carbon atoms

  • Two different groups attached to each carbon atom

  • The groups must be arranged differently on each carbon atom (i.e. one group is up and the other is down on one carbon, while the opposite is true on the other carbon)



Therefore, the lowest alkene capable of exhibiting geometrical isomerism is ethene (C2H4). This is because it has:



  • A double bond between two carbon atoms

  • Two different groups (hydrogen and methyl) attached to each carbon atom

  • The groups are arranged differently on each carbon atom (i.e. one hydrogen and one methyl group are up on one carbon, while the opposite is true on the other carbon)



Other alkenes, such as propene (C3H6) and butene (C4H8), also have double bonds and different groups attached to each carbon atom, but they do not have the necessary arrangement of groups to exhibit geometrical isomerism.
Community Answer
The lowest alkene which is capable of exhibiting geometrical isomerism...
The lowest alkene which is capable of exhibiting geometrical isomerism is 1-Butene
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