## Hybridization Structure

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

Trinity Vu 1D
Posts: 53
Joined: Fri Aug 30, 2019 12:15 am

### Hybridization Structure

How do you know which orbitals/how many orbitals mix and hybridize for an atom in a molecule? For example, in class we went over CH4 in which C has sp3 orbitals while C2H4 has sp2 orbitals.

Shivam Rana 1D
Posts: 106
Joined: Fri Aug 09, 2019 12:16 am

### Re: Hybridization Structure

you count the number of lone pairs + bonds (regardless of bond type). for example, 2 bonds with one lone pair would be sp2. 2 bonds by themselves would be sp.

ValerieChavarin 4F
Posts: 99
Joined: Wed Sep 18, 2019 12:18 am

### Re: Hybridization Structure

I was a little confused about that too.

Ally Huang- 1F
Posts: 103
Joined: Thu Jul 25, 2019 12:16 am

### Re: Hybridization Structure

Hybridization is based on the number of electron density regions around the central atom. If there is one region of electron density, it will have s orbitals. If there are two regions, it will have sp orbitals. If there are 3 electron density regions there is sp2 orbitals... and so on. CH4 has 4 regions of electron density so it will have sp3 orbitals while C2H4 has 3 regions of electron density around each carbon. Therefore, it has sp2 orbitals.