Temporary vs. Permanent Dipole

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ASetlur_1G
Posts: 101
Joined: Fri Aug 09, 2019 12:17 am

Temporary vs. Permanent Dipole

Postby ASetlur_1G » Sun Nov 10, 2019 5:55 pm

What exactly is meant by a temporary dipole and how is it different from a permanent dipole?

Tanmay Singhal 1H
Posts: 143
Joined: Sat Jul 20, 2019 12:16 am

Re: Temporary vs. Permanent Dipole

Postby Tanmay Singhal 1H » Sun Nov 10, 2019 5:59 pm

permanent dipole is within a molecule where the EN difference is big enough. temporary is between two molecules that keeps breaking and forming.

preyasikumar_2L
Posts: 101
Joined: Fri Aug 09, 2019 12:17 am

Re: Temporary vs. Permanent Dipole

Postby preyasikumar_2L » Sun Nov 10, 2019 6:05 pm

Permanent dipoles form when the electronegativity differences between the atoms bonded in a molecule is very great that some atoms are slightly positively charged and some are slightly negatively charged - for example, in water, there's a permanent dipole between the bonded hydrogens and oxygen such that the hydrogens in the water molecule always have a δ+ and the oxygens have a δ-.

Temporary dipoles form when the electronegativity differences between the atoms bonded in a molecule is not too great, and are thus due to the movement of electrons around the bonded atoms that cause there to be specific moments when the atoms are slightly polar, since there are more electrons near one of the atoms making it δ- in that moment and the other atom δ+ in that same moment.

Harry Zhang 1B
Posts: 101
Joined: Sat Sep 14, 2019 12:16 am

Re: Temporary vs. Permanent Dipole

Postby Harry Zhang 1B » Sun Nov 10, 2019 6:09 pm

Temporary dipole is when a molecule is not actually polar but because of the shifting electron clouds it creates a temporary dipole moment. Permanent dipole is formed when the difference electronegativity is large enough to allow the electronegative atom to constantly attract electrons from the other one.


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