Degrees of Unsaturation

For each of the compounds on the left, determine the total number of degrees of unsaturation (unsaturation number).

Click the mouse on the molecule to view the answer.








































2 degrees of unsaturation

The numbering sequence is shown below:

The molecular formula for the molecule is C8H14 which is 4 hydrogens "short", giving 2 degrees of unsaturation (one for each ring).







































2 degrees of unsaturation

The molecular formula for the molecule is C8H14 which is 4 hydrogens "short", giving 2 degrees of unsaturation (one for each double bond).




































4 degrees of unsaturation

The molecular formula for the molecule is C6H6 which is 8 hydrogens "short", giving 4 degrees of unsaturation (one for the ring and one for each of the double bonds).