## Types of Bonds

(Polar molecules, Non-polar molecules, etc.)

Bree Perkins 1E
Posts: 34
Joined: Fri Apr 06, 2018 11:04 am

### Types of Bonds

Hi Everyone,

I am a bit confused on the $\sigma -bonds$ and the $\pi -bonds$. I get that they are two different types of bonds and that they occur when to elements bond, but I don't quite understand what the difference is between the two? What makes them different?

Danielle Sumilang - 1F
Posts: 31
Joined: Fri Apr 06, 2018 11:05 am

### Re: Types of Bonds

Hello!

The difference between the two bonds is from how the orbitals overlap. Sigma bonds occur when orbitals overlap from end to end. It kind of resembles a Venn diagram. Pi bonds occur when orbitals overlap from side to side.

AnthonyDis1A
Posts: 30
Joined: Fri Apr 06, 2018 11:05 am

### Re: Types of Bonds

Sigma bonds allow more flexibility for molecules to change shape. Pi bonds make molecules more rigid.

Jasmine Emtage-1J
Posts: 24
Joined: Fri Apr 06, 2018 11:02 am

### Re: Types of Bonds

Sigma bonds allow atoms to rotate independently of each other, but pi bonds don't.

Samantha Draghi 1L
Posts: 24
Joined: Fri Apr 06, 2018 11:02 am

### Re: Types of Bonds

Sigma bonds allow molecules to rotate while pi bonds do not which means that if there is more than one bond (double or triple) there must be pi bonds because if the atoms were to rotate it would need to break a bond to change the chemical composition of the molecule

Vienna Cimetta 1L
Posts: 31
Joined: Thu Feb 01, 2018 3:01 am

### Re: Types of Bonds

A sigma bond is a single bond and the rest from there are pi bonds, because there can only be one sigma bond between two molecules. Therefore, double and triple bonds are pi bonds.

Isobel Tweedt 1E
Posts: 31
Joined: Fri Apr 06, 2018 11:05 am

### Re: Types of Bonds

I was confused by this too, so here's a helpful website with images of what the bonds look like to demonstrate the different overlapping properties: https://sites.google.com/site/ed350201003/Task