Determining a Dipole Moment

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

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Kathryn Wilhem 1I
Posts: 60
Joined: Fri Sep 28, 2018 12:27 am

Determining a Dipole Moment

Postby Kathryn Wilhem 1I » Sat Nov 17, 2018 9:43 pm

I am confused on what is used to determine whether an atom is positively or negatively charged in a dipole moment. Is it related to formal charge?

Kevin ODonnell 2B
Posts: 62
Joined: Fri Sep 28, 2018 12:24 am

Re: Determining a Dipole Moment

Postby Kevin ODonnell 2B » Sat Nov 17, 2018 9:54 pm

The dipole charge has to do with electronegativity. The more electronegative atom has a partial negative charge since it pulls the electrons closer to itself. While, the less electronegative atom is partially positive since the other atom is holding the electrons more tightly.

Mhun-Jeong Isaac Lee 1B
Posts: 54
Joined: Fri Sep 28, 2018 12:17 am

Re: Determining a Dipole Moment

Postby Mhun-Jeong Isaac Lee 1B » Sat Nov 17, 2018 10:06 pm

So for example, in C2H2Cl2, C is bonded to Cl. The Cl would be more negative because it has a higher electronegativity, it wants electrons more than the C. Thus, the C would be more positive. These are the positive and negative dipole moments.

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