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What is the difference between a sigma and a pi bond?

User ZOlive
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Step-by-step explanation:

A sigma bond can be considered as the overlapping of two s orbitals. For example, in methane (CH4) all the hydrogen atoms have their s orbital overlapped with the hybrid sp3 orbital of carbon.

On the other hand, a pi bond can be considered as the overlapping of two p orbitals.

User Fhucho
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