| 1. | Pi-bonds are more diffuse bonds than the sigma bonds.
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| 2. | The shift in the sigma bond may be antarafacial or suprafacial.
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| 3. | There is no more than 1 sigma bond between any two atoms.
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| 4. | The sigma bond in this compound is destroyed in reaction with ethanol.
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| 5. | Usually, a single bond is a sigma bond.
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| 6. | Alkane conformers arise from rotation around sp 3 hybridised carbon carbon sigma bonds.
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| 7. | Overlap of an sp orbital from each atom forms one sp sp sigma bond.
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| 8. | These may have their own names, such as sigma bond and pi bond.
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| 9. | Pi bonds are usually weaker than sigma bonds.
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| 10. | Polyethylene has a lot of sigma bonds.
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