Stable Structures

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Amir Bayat
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Joined: Sat Sep 07, 2019 12:16 am

Stable Structures

Postby Amir Bayat » Fri Oct 25, 2019 3:38 pm

In class today, Doctor Lavelle talked about how there are different methods in drawing the Lewis Dot Structures for different molecules like sulfate. How do we know, again, which structure is more stable? Is it when the central atom has a formal charge of 0?

Jarrett Peyrefitte 2K
Posts: 102
Joined: Sat Aug 24, 2019 12:16 am

Re: Stable Structures

Postby Jarrett Peyrefitte 2K » Fri Oct 25, 2019 3:47 pm

Yes, it is when the formal charge is equal to 0 that shows the structure is stable. To find out the formal charge of a structure, you must use this equation:

FC = V - (L + S/2)

Nick Fiorentino 1E
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Joined: Wed Sep 18, 2019 12:16 am

Re: Stable Structures

Postby Nick Fiorentino 1E » Fri Oct 25, 2019 4:09 pm

Yes, you use FC = V - (L + S/2). Not all structures will have a formal charge equal to 0 but you want to find the structure that is closest to that value. Also, remember you have to find the formal charge for each atom

HannahBui 2K
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Joined: Wed Sep 18, 2019 12:19 am

Re: Stable Structures

Postby HannahBui 2K » Fri Oct 25, 2019 4:18 pm

Yes a structure is most stable when its formal charge is 0! However this is not always possible, so the closer a formal charge is to 0 the more stable it is.

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Joined: Sat Aug 17, 2019 12:16 am

Re: Stable Structures

Postby AlyssaYeh_1B » Sat Oct 26, 2019 8:13 pm

Remember that if a formal charge of 0 is not possible, the atoms on the outside of the central atom generally have the formal charges that are not 0

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Joined: Wed Feb 27, 2019 12:17 am

Re: Stable Structures

Postby Ayushi2011 » Sat Oct 26, 2019 8:46 pm

Formal charge needs to be calculated. If the formal charge of the central atom is 0, the atom is stable.

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