How do you determine pi bonds?
each double bond has 1 pi bond. Each triple bond has 2 pi bonds
When looking at a molecules all you need to do is to count the number of double and triple bonds. each double bond has 1 pi bond. Each triple bond has 2 pi bonds. If there are only single bonds, there are no pi bonds.
If for example, you have 2 double bonds, then the molecule has 2 pi bonds.
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