Dipole Moments Determined by Electronegativity?

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FDeCastro_1B
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Joined: Thu Jul 25, 2019 12:16 am

Dipole Moments Determined by Electronegativity?

Postby FDeCastro_1B » Wed Nov 06, 2019 4:54 pm

Can someone please explain how electronegativity determines the dipole moments? Which element gets which partial charge?

Caitlyn Tran 2E
Posts: 100
Joined: Fri Aug 09, 2019 12:15 am

Re: Dipole Moments Determined by Electronegativity?

Postby Caitlyn Tran 2E » Wed Nov 06, 2019 10:14 pm

Electronegativity refers to how likely it is for an atom to gain another electron. If an atom has a high electronegativity, it is more likely to pull electrons toward itself, so the more electronegative atom will likely have a partial negative charge.

Jasmine Summers 4G
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Joined: Wed Sep 18, 2019 12:17 am

Re: Dipole Moments Determined by Electronegativity?

Postby Jasmine Summers 4G » Wed Nov 06, 2019 10:18 pm

Dipole moments point toward the more electronegative atom, because their higher electronegativity attracts the other atom's electrons closer toward it. This means that their bond isn't completely covalent. When atoms have a higher difference in electronegativity, the dipole moment is stronger and their bond is more ionic.

Lindsey Chheng 1E
Posts: 110
Joined: Fri Aug 30, 2019 12:16 am

Re: Dipole Moments Determined by Electronegativity?

Postby Lindsey Chheng 1E » Wed Nov 06, 2019 10:25 pm

FDeCastro_1B wrote:Can someone please explain how electronegativity determines the dipole moments? Which element gets which partial charge?


If Ionization Energy and Electron Affinity are high, then atom will have high Electronegativity and pull shared electrons towards it (resulting in a partial negative charge), these are typically anions

If Ionization Energy and Electron Affinity are low, then atom will have low Electronegativity and shared electrons will be further away (resulting in a partial positive charge), these are typically cations


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