Dipole Moment and Formal Charge

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Michelle Dong 1F
Posts: 110
Joined: Fri Sep 29, 2017 7:04 am

Dipole Moment and Formal Charge

Postby Michelle Dong 1F » Mon Nov 06, 2017 4:54 pm

Is there a relationship between a molecule having a dipole moment and the atoms having formal charges that aren't 0? For example, the Lewis Structure of CO shows that it's linear, but the formal charges on C and O are -1 and +1 respectively -- does that create a dipole moment?

Meredith Steinberg 2E
Posts: 50
Joined: Thu Jul 13, 2017 3:00 am

Re: Dipole Moment and Formal Charge

Postby Meredith Steinberg 2E » Tue Nov 07, 2017 11:21 am

Formal charge changes depending on the way in which you draw the lewis structure of the compound. If the compound is not drawn in its most stable structure, I don't think the formal charge will always accurately display the most electronegative atom. When constructing the dipole moment, the arrow is always drawn towards the atom with the highest electronegativity (therefore in CO the arrow would be drawn toward oxygen).


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