## Number of Sigma and Pi Bonds

Nathan Mariano 2G
Posts: 55
Joined: Thu Sep 27, 2018 11:29 pm

### Number of Sigma and Pi Bonds

Why does only one sigma bond form between two atoms? Why can multiple pi bonds form between two atoms?

Tarika Gujral 1K
Posts: 50
Joined: Thu Sep 27, 2018 11:27 pm

### Re: Number of Sigma and Pi Bonds

Sigma bonds refer to overlap of s orbitals: since there is only one s orbital, there can only be one sigma bond. Pi bonds, on the other hand, refer to overlap of p orbitals. Since there are multiple p orbitals, multiple pi bonds can form.

Andrew Lam 3B
Posts: 30
Joined: Thu Sep 27, 2018 11:24 pm

### Re: Number of Sigma and Pi Bonds

pi bonds form between p orbitals -- there are 3 of them per atom

Daniel Chang 3I
Posts: 33
Joined: Thu Sep 27, 2018 11:23 pm

### Re: Number of Sigma and Pi Bonds

It's due to the number of orbitals. S orbitals have one orbital while P orbitals have three

chrisavalos-2L
Posts: 50
Joined: Thu Sep 27, 2018 11:18 pm

### Re: Number of Sigma and Pi Bonds

This is because a sigma bond is the overlapping of the s orbital and since there is only one there can only be one sigma bond. Also, there can be multiple pi bonds because it occurs between p orbitals, and there are three therefore there can be multiple pi bonds

Esther Lee 4H
Posts: 57
Joined: Thu Sep 27, 2018 11:29 pm

### Re: Number of Sigma and Pi Bonds

you can have multiple pi bonds because there are 3 p orbitals

Sang Hyoun Hong 3G
Posts: 31
Joined: Thu Sep 27, 2018 11:27 pm

### Re: Number of Sigma and Pi Bonds

You can have more than 1 pi bond because they are made up of the interaction between p orbitals. Because some elements can have the Px Py and Pz orbitals, they can make 3 pi bonds while only one S orbital is available, thus making it so that there can only be one sigma bond.