# How do electrons revolve around in molecule bonded by covalent bonds?

How do electrons revolve around in molecule bonded by covalent bonds? An electron revolves around one nucleus. But if it is going to be shared by another nucleus(as in covalent bond), then how will the electron revolve? does it go all around both the nucleus? Please explain a little deeply.

Borek
Mentor
An electron revolves around one nucleus.

It doesn't.

Planetary model is only a... model. One that explains some of the observed properties, but it has not much to do with the reality. Electrons in atom or molecule don't behave like a point particles, they behave like waves. They are not in any particular position, so they can't change their position, as planetary model suggests.

The electron is shared by both atoms so you can say that it spends some time around one atom and some time around the other.

DrDu
In the case of the $\mathrm{H_2^+}$ molecular ion, the electron in a classical model would move on an elipsis around both electrons with the two H nuclei in the foci of the elipsis.