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For single bonds, they have one sigma bond. For double bonds, they have one sigma bond and one pi bond. For tripe bonds, they have one sigma bond and two pi bonds. You can just remember that one bond is sigma bond and the rest are pi bonds.
Interesting addition that we went over in my discussion section: sigma bonds are stronger than pi bonds. Even though pi bonds have two areas where the electron densities overlap, sigma bonds have a larger area of overlap, which makes the bond stronger.
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