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Hi everyone, I am a little confused about the number of bonds related to sigma and pi bonds. To clarify, a pi bond is only one bond even though there are two interacting electron densities on the internuclear axis? The example Dr. Lavelle showed using two markers and his hands make it seem like a pi bond is two bonds.
The two marker thing shows that there are two places where the orbitals interact, not that there are two pairs of electron densities interacting. There is only one pair of electron densities, one pair of electrons, and one bond formed.
It is one bond formed between two electrons. If you are confused, it might help to think about a lewis structure. A single bond is represented by 2 valence electrons, yet it is still only one bond.
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