Remembering VSEPR

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

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Emily Mei 1B
Posts: 50
Joined: Fri Sep 29, 2017 7:04 am

Remembering VSEPR

Postby Emily Mei 1B » Sat Dec 09, 2017 5:10 pm

Does anyone have any tricks for remembering VSEPR shapes?

Lauren Seidl 1D
Posts: 51
Joined: Fri Sep 29, 2017 7:06 am

Re: Remembering VSEPR

Postby Lauren Seidl 1D » Sat Dec 09, 2017 5:22 pm

You can memorize the VSEPR shape for each VSEPR formula (i.e. AX3E = trigonal pyramidal, or AX6 = octahedral). That way for every structure you draw, you can simply figure out its VSEPR formula and know which shape it denotes. Otherwise, drawing out the VSEPR structure should give you a clear idea at its shape. I'm pretty sure someone posted a link to a video of a VSEPR song if you think that would help you lol

Mitch Mologne 1A
Posts: 74
Joined: Fri Sep 29, 2017 7:04 am

Re: Remembering VSEPR

Postby Mitch Mologne 1A » Sat Dec 09, 2017 5:35 pm

Try to study the shapes in groups of the amount of bonding regions, that way when you substitute a lone pair for a bond, you will know the still know the shape.

Isaiah Little 1A 14B
Posts: 50
Joined: Fri Sep 29, 2017 7:05 am

Re: Remembering VSEPR

Postby Isaiah Little 1A 14B » Sat Dec 09, 2017 5:35 pm

The way I remember them is that I remember the shapes that have the largest number of bonding atoms, like octahedral and tetrahedral. If lone pairs replace the bonding atoms in a molecule, I picture the shape without a bonding atom at a point (ex; tetrahedral + 1 lone pair in place of an atom = trigonal pyramidal), and the same for if the molecule lacks lone pairs or bonding atoms altogether (as in trigonal planar).


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