determining shape from given information


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305174946
Posts: 61
Joined: Fri Sep 28, 2018 12:17 am

determining shape from given information

Postby 305174946 » Thu Nov 22, 2018 10:24 pm

could you determine the geometry of a molecule (VSEPR) if given only its hybridization? if given its hybridization and another aspect? if so what aspect?

Saman Andalib 1H
Posts: 73
Joined: Fri Sep 28, 2018 12:16 am

Re: determining shape from given information

Postby Saman Andalib 1H » Thu Nov 22, 2018 11:05 pm

Not necessarily. Knowing the hybridization surrounding a particular atom in a molecule tells you the number of regions of electron density around that atom. This allows you to know the initial VSEPR molecular geometry, but you cannot know the exact altered molecular shape unless you also know the number of lone pairs which surround that particular atom.

For Example:

H20 and CH4 both have sp3 hybridization orbitals surrounding the central O and C atoms respectively.

:O:
/ \
H H
H
I
H - C -H (Spacing is messing up the Lewis structure for this molecule)
I
H

This information about the hybridization allows you to know that both molecules have an initial VSEPR molecular geometry which is Tetrahedral, but it does not tell you that the two lone pairs surrounding the Oxygen atom change its molecule geometry to being Bent.

Rami_Z_AbuQubo_2K
Posts: 89
Joined: Thu Jun 07, 2018 3:00 am

Re: determining shape from given information

Postby Rami_Z_AbuQubo_2K » Fri Nov 23, 2018 8:54 pm

No because hybridization only tells us how atomic orbitals combine to form hybridized orbitals. These orbitals allow us to determine bonding properties of a molecules which contributes to the overall geometric structure. It is not solely to create the structure of a molecule, mainly because were are looking at specific parts of a molecule.

Katelyn Phan 2A
Posts: 61
Joined: Fri Sep 28, 2018 12:23 am

Re: determining shape from given information

Postby Katelyn Phan 2A » Sat Nov 24, 2018 10:37 am

No, hybridization only tells us the number of regions of electron density around the central atom. It doesn't tell us the specific bonds/pairs around it. (bonded or lone)


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