I'm not too sure on the concept of cations distorting the shape of the electron density. Eg something like this:
Does the cation, Hydrogen here, cause the shape to be like this as it pulls electrons towards it ? Or is this because of the difference in electronegativity ?
Electron density Watch
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Last edited by Gelato; 22-12-2010 at 12:16.
- 22-12-2010 12:13
- 22-12-2010 12:16
no, the Chlorine is more electronegative, so it pulls the electrons in the bonds closer towards it, causing that shape,a s there are more electrons towards the chlorine than the hydrogen.
- 22-12-2010 12:50
I think you've picked a 'bad example' to try and rationalise the electron density in terms of polarisability of anions because HCl is predominantly covalent.
Polar covalent bonds (such as HCl) is best explained in terms of electronegativity whilst ionic bonds with parital covalent character (such as AlCl3) is better described in terms of polarisation of anions by high charge density cations
- 22-12-2010 12:51
A region where the chance of finding electrons is greatest.