Re: If two atoms approach each other shouldn't they experience a force of repulsion?
- From: Fred Kasner <fkasner@xxxxxxxxxxxxx>
- Date: Mon, 28 Jan 2008 01:37:55 GMT
uri wrote:
On Jan 26, 6:46 pm, Marvin <physc...@xxxxxxxxxxx> wrote:
When the atoms aren't ionized the feel no force between them
(except the extremely weak gravitational attraction). The
electropn cloud around around atom A shields the electrons
around atom B from the charge on atom A's nucleus (and
vice-versa),
When they come together to form a covalent bond, it is that
bond that keeps them together.
But why do atoms form bonds? If the atoms aren't ionized and feel no
force between them (except gravity) then how do they form bonds?
Two neutral and non-polar molecules approach one another and there is still an active attraction between them of energy less than a bond. This is referred to as vsn der Waals forces. It is the result of the momentary dipole dipole interactions that result as the motion of electrons in the molecules cause such weak interactions. It is the weakest of the intermolecular attractive forces that chemists recognize of the several type of non-bond interactions.
FK
.
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