Molecular Shape Review Problem

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

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Patrick Wilson 2B
Posts: 22
Joined: Wed Sep 21, 2016 3:00 pm

Molecular Shape Review Problem

Postby Patrick Wilson 2B » Sat Oct 29, 2016 4:50 pm

yesterday at the review session we were creating a lewis structure for AlCl3 and we decided that it is a lewis acid because Al can accept a lone pair. Originally with three regions of electron density the shape was trigonal planar, however if it were to accept that extra lone pair would it become trigonal pyramidal ?

Josh Ku 3H
Posts: 25
Joined: Wed Sep 21, 2016 2:59 pm

Re: Molecular Shape Review Problem

Postby Josh Ku 3H » Sat Oct 29, 2016 5:08 pm

Usually the general rule for Aluminum is that when it does complete its octet it forms coordinate covalent bond with another chlorine molecule. The process is described on page 90 of the textbook but basically the molecule should be tetrahedral around the Aluminum atom.

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