electron-pair geometry vs molecular geometry

(Polar molecules, Non-polar molecules, etc.)

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bellaha4F
Posts: 104
Joined: Wed Sep 18, 2019 12:20 am

electron-pair geometry vs molecular geometry

Postby bellaha4F » Thu Nov 21, 2019 2:13 pm

What is the difference between electron-pair geometry and molecular geometry? Should we know both or should we just know the molecular geometry?

Jacey Yang 1F
Posts: 101
Joined: Fri Aug 09, 2019 12:17 am

Re: electron-pair geometry vs molecular geometry

Postby Jacey Yang 1F » Thu Nov 21, 2019 2:32 pm

The electron pair geometry is based on the number of regions of electron density around the atom (parent shape), while molecular geometry is the actual shape that includes bonding pairs and lone pairs.

Megan Ngai- 3B
Posts: 50
Joined: Fri Aug 09, 2019 12:17 am

Re: electron-pair geometry vs molecular geometry

Postby Megan Ngai- 3B » Thu Nov 21, 2019 3:00 pm

Electron pair geometry: number of regions of electron density
Molecular geometry: includes bonding pairs and lone pairs.

Katie Kyan 2K
Posts: 106
Joined: Fri Aug 09, 2019 12:16 am
Been upvoted: 1 time

Re: electron-pair geometry vs molecular geometry

Postby Katie Kyan 2K » Thu Nov 21, 2019 3:57 pm

Electron pair geometry refers to the arrangement of electron groups and takes into account the lone pairs in a molecule. However, molecular geometry takes into account the number of bonds AND the lone pairs. For example for NH3, the electron geometry is tetrahedral whereas the molecular geometry is trigonal pyramidal.


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