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Hybridization with Lone Pairs

Posted: Mon Nov 26, 2018 6:26 am
by Claire Guo 1B
If a molecule has a lone pair, like NH3, and is considered trigonal pyramidal, is the hybridization still sp3? like that for tetrahedral?

Re: Hybridization with Lone Pairs

Posted: Mon Nov 26, 2018 9:47 am
by Ashley Kim
Yes, the hybridization is still sp3 and the regional geometry is tetrahedral. However, the molecular shape is only based on the existence of atoms and not lone pairs.

Re: Hybridization with Lone Pairs

Posted: Mon Nov 26, 2018 9:48 am
by Tam To 1B
Yes, in this case N would be sp3 hybridized. When a lone pair of electrons are localized, they are considered in hybrid orbitals.
However, in the case of resonance structures, delocalized electrons in the resonance structures are not counted in hybrid orbitals.

Re: Hybridization with Lone Pairs

Posted: Mon Nov 26, 2018 10:04 am
by marg44
Are we going to be dealing with resonance structure and delocalized atoms on this Friday’s test?

Re: Hybridization with Lone Pairs

Posted: Mon Nov 26, 2018 3:00 pm
by Linh Vo 2J
marg44 wrote:Are we going to be dealing with resonance structure and delocalized atoms on this Friday’s test?


I do not believe we are going to have those questions because for my discussion, my TA said that the test will focus on VSEPR structures, bond angles, lone pair effect, and physical forces (Van Der Waals, H bonding, and London Dispersion).