Problem: Which is the least stable? 

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We are asked which of the following compounds is the least stable?


We are given compounds that are basically identical except for the position of the double bonds. 

  • This means we focus on the stability of the alkene.
  • The least stable alkene has the least amount of substituents (excluding H).


Analyze each: 


Molecule A

  • 4 Subtituents


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Problem Details

Which is the least stable? 

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Alkene Stability concept. You can view video lessons to learn Alkene Stability. Or if you need more Alkene Stability practice, you can also practice Alkene Stability practice problems.