Dipoles
Moderators: Chem_Mod, Chem_Admin
-
- Posts: 30
- Joined: Fri Sep 28, 2018 12:23 am
-
- Posts: 62
- Joined: Fri Sep 28, 2018 12:27 am
Re: Dipoles
Dipole moments happen when one atom in a molecule is more polar than another, like H2O. Electrons are pulled toward O, the more electronegative atom. This gives the end of the molecule with O a slightly negative charge compared to the H ends.
Dipole-dipole attractions: this is when 2 polar molecules (like H2O) are attracted to each other because each molecule has a positive end and a negative end, so the positive end of one molecule is attracted to the negative end of the other.
Dipole-induced dipole: this is when you have a polar molecule and a neutral molecule. When they get close enough together, the negative end of the polar molecule repels the electrons in the neutral molecule, causing the neutral molecule to have a positive end and a negative end, called an induced dipole. At that point, the negative end of the polar molecule is attracted to the positive end of the previously neutral molecule.
Dipole-dipole attractions: this is when 2 polar molecules (like H2O) are attracted to each other because each molecule has a positive end and a negative end, so the positive end of one molecule is attracted to the negative end of the other.
Dipole-induced dipole: this is when you have a polar molecule and a neutral molecule. When they get close enough together, the negative end of the polar molecule repels the electrons in the neutral molecule, causing the neutral molecule to have a positive end and a negative end, called an induced dipole. At that point, the negative end of the polar molecule is attracted to the positive end of the previously neutral molecule.
-
- Posts: 78
- Joined: Fri Sep 28, 2018 12:18 am
-
- Posts: 68
- Joined: Fri Sep 28, 2018 12:27 am
- Been upvoted: 2 times
Re: Dipoles
in a non-polar molecule, the whole molecule has zero dipole moment but bonds are polar. When two non-polar molecules comes closer to each other, the negative part (electrons) of one molecule attract the positive part (nucleus) of another molecule. As a result, two dipoles are induced.
Who is online
Users browsing this forum: No registered users and 5 guests