## Sigma and Pi order in MO

Moderators: Chem_Mod, Chem_Admin

Anthony_Imperial_1G
Posts: 22
Joined: Wed Sep 21, 2016 2:59 pm

### Sigma and Pi order in MO

What order are you supposed to put the sigma and pi bonds when doing the molecular orbital theory? In some cases in the 2p orbitals, the sigma bond is lower in energy than the pi bonds and the opposite in other cases. I think there was a rule about switching between the two once you hit the 8th charge? I'm really confused about this.

Josephine_Tang_1N
Posts: 30
Joined: Wed Sep 21, 2016 2:57 pm

### Re: Sigma and Pi order in MO

Correct me if I'm wrong but I think $\pi$2p bond switches with the $\sigma$2p once z$\geq$8 because there are actually electrons occupying the space for pi bonds.

Return to “*Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)”

### Who is online

Users browsing this forum: No registered users and 1 guest