formal charge and VSEPR

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

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Jaquelinne Rodriguez-Lopez 1L
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formal charge and VSEPR

Postby Jaquelinne Rodriguez-Lopez 1L » Sat Jun 02, 2018 5:33 pm

when figuring molecular shape, I've noticed that the textbook has Lewis structures that do not have the lowest formal charge. I know it does not matter as much because we can still figure out the shape. For the final do we draw the Lewis structure according to formal charge before figuring VSEPR shape?

Jack Martinyan 1L
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Re: formal charge and VSEPR

Postby Jack Martinyan 1L » Sat Jun 02, 2018 6:05 pm

Yes, I believe the best habit to keep in mind is to draw the lewis structure with the lowest formal charge before applying VSEPR

hannahtweedy
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Re: formal charge and VSEPR

Postby hannahtweedy » Sat Jun 02, 2018 6:30 pm

It's better to do it this way... but does anybody know if it's a necessity to be correct?

Zuri Smith 1A
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Re: formal charge and VSEPR

Postby Zuri Smith 1A » Sat Jun 02, 2018 8:20 pm

This is somewhat unrelated, but does VSEPR just refer to the notation? Like AXE4?

Emma Leshan 1B
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Re: formal charge and VSEPR

Postby Emma Leshan 1B » Sun Jun 03, 2018 12:49 pm

VSEPR refers to the notation and also the way of finding the molecular shape from the Lewis structure.

Jaquelinne Rodriguez-Lopez 1L
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Re: formal charge and VSEPR

Postby Jaquelinne Rodriguez-Lopez 1L » Thu Jun 07, 2018 2:52 am

"This is somewhat unrelated, but does VSEPR just refer to the notation? Like AXE4?"
yes, AXE is the VSEPR formula

Jacy Black 1C
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Re: formal charge and VSEPR

Postby Jacy Black 1C » Fri Jun 08, 2018 11:44 am

In determining formal charge, I know it is #valence electrons - #bonds and #lp. But, if there is one set of lone pairs (2 electrons, one Lone pair) would I just subtract 1 ? Or because there are two electrons, would I subtract two?

Yadira Flores 1G
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Re: formal charge and VSEPR

Postby Yadira Flores 1G » Fri Jun 08, 2018 12:43 pm

You would subtract one.

MariaJohn1D
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Re: formal charge and VSEPR

Postby MariaJohn1D » Fri Jun 08, 2018 9:28 pm

VESPR is used to predict molecular geometry using valence shell electrons


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