## Hybridization with lone pairs on central atom

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

Isabel Day 1D
Posts: 48
Joined: Fri Aug 09, 2019 12:15 am

### Hybridization with lone pairs on central atom

Can hybridization be done for atoms with shapes that aren't linear, trigonal planar, tetrahedral, trigonal bipyramidal, or octahedral? For example, can atoms with bent, seesaw, etc. shapes have a hybridization? If not, why?

Ziyan Wang 3J
Posts: 51
Joined: Wed Sep 18, 2019 12:22 am

### Re: Hybridization with lone pairs on central atom

Yes, it's basically the same rule as the one without lone pairs. 2 electron domains -> sp, 3 -> sp2, 4 -> sp3, 5 -> sp3d, 6 -> sp3d2

karinaseth_1A
Posts: 57
Joined: Sat Jul 20, 2019 12:15 am

### Re: Hybridization with lone pairs on central atom

Atoms with lone pairs can be hybridized, such as the example NH3 that Dr. Lavelle gave in class. This is because the final hybridization state must reflect the number of electron density regions around the central atom, which includes any lone pairs. Going back to the NH3 example, the two lone pairs on the N are reflected in the hybridization state sp3, but there is a full suborbital with a pair of electrons.

Ruth Glauber 1C
Posts: 85
Joined: Wed Sep 18, 2019 12:20 am

### Re: Hybridization with lone pairs on central atom

Yes, and I think page 119 had an example on this?

ValerieChavarin 4F
Posts: 64
Joined: Wed Sep 18, 2019 12:18 am

### Re: Hybridization with lone pairs on central atom

Yes since the regions of electron density correlates with the hybridization. 2 regions=sp and so on like without lone pairs.

John Arambulo 1I
Posts: 58
Joined: Sat Jul 20, 2019 12:15 am

### Re: Hybridization with lone pairs on central atom

Hybridization is based on the number of regions of electron density.

Alan Wu
Posts: 61
Joined: Sat Sep 14, 2019 12:16 am

### Re: Hybridization with lone pairs on central atom

Yes, this can happen. The number of electron density regions equals the number of hybrid orbitals created. However, the lone pairs would be already-paired electrons in these hybrid orbitals. The unpaired electrons, on the other hand, are responsible for forming bonds with the orbitals of other atoms.