## Composition of a Bond

$sp, sp^{2}, sp^{3}, dsp^{3}, d^{2}sp^{3}$

Kristina Nguyen 1C
Posts: 29
Joined: Thu Jul 27, 2017 3:00 am

### Composition of a Bond

Would the composition of the OH bond in HCOOH be made up of a sigma(H1s, O2s)? Thanks!
Last edited by Kristina Nguyen 1C on Fri Dec 08, 2017 10:27 pm, edited 2 times in total.

Caroline C 1G
Posts: 53
Joined: Fri Sep 29, 2017 7:05 am

### Re: Composition of a Bond

The composition of the OH bond would be sigma(H 1s, O 2sp^3). The oxygen has 4 areas of electron density (two single bonds and two lone pairs), and that is why the composition of the OH bond includes "2sp^3".

Kristina Nguyen 1C
Posts: 29
Joined: Thu Jul 27, 2017 3:00 am

### Re: Composition of a Bond

Oh yeah I totally overlooked the lone pairs, thanks!

Essly Mendoza 1J
Posts: 25
Joined: Fri Sep 29, 2017 7:04 am

### Re: Composition of a Bond

When we write the composition of bonds for Carbon, why is it that we write a 2 in front of the hybridization, like this C2sp^2?

Cali Rauk1D
Posts: 51
Joined: Fri Sep 29, 2017 7:03 am

### Re: Composition of a Bond

the 2 is for the row number

Essly Mendoza 1J
Posts: 25
Joined: Fri Sep 29, 2017 7:04 am

### Re: Composition of a Bond

Thanks!

JonathanLam1G
Posts: 25
Joined: Fri Sep 29, 2017 7:04 am

### Re: Composition of a Bond

Does anyone know why the pi bond is often (O 2p, O 2p) for let's say a double bond between two O atoms....and not (O 2sp^2, O 2sp^2)