Formal Charge and correct numbers


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katietietsworth_3c
Posts: 31
Joined: Fri Sep 28, 2018 12:24 am

Formal Charge and correct numbers

Postby katietietsworth_3c » Wed Oct 31, 2018 10:43 am

How do we know if an element can be negative or positive if it is impossible to make them both charged to 0?

Andre_Galenchik_2L
Posts: 69
Joined: Fri Sep 28, 2018 12:23 am

Re: Formal Charge and correct numbers

Postby Andre_Galenchik_2L » Wed Oct 31, 2018 1:17 pm

Whichever one has a higher electronegativity (a want for electrons), that element will gain the negative charge.

jonathanjchang2E
Posts: 61
Joined: Fri Sep 28, 2018 12:26 am

Re: Formal Charge and correct numbers

Postby jonathanjchang2E » Wed Oct 31, 2018 1:20 pm

The positive or negative formal charge of an element is based on the surrounding electrons (bonded or lone pairs), but the formal charges of electrons in a molecule can "cancel" each other out resulting in a net charge of 0 for the molecule.


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