Problem: Click on all of the atoms that make up the largest coplanar units in the molecules below. 

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We are asked to identify the atoms that make up the largest coplanar units in the molecules below.


Coplanar means that the atoms are in the same plane. There are 2 main characteristics that should be considered when checking for coplanarity:

  • Double and Triple bonds - The atoms included in the pi bond and the those attached to previously mentioned atoms are coplanar
  • Small cycloalkanes/heterocycles - 5 or fewer atoms in the ring would mean that the structure is planar. 


Analyze each structure: 


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Problem Details

Click on all of the atoms that make up the largest coplanar units in the molecules below.