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8 Cards in this Set
- Front
- Back
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Electron-pair repulsion theory |
1.e pairs surrounding a central atom determine the shape of the molecule or ion 2. e pairs repel one another so that they are arranged as far apart as possible 3.the arrangement of e pairs minimises repulsion and thus holds the bonded atoms in a definite shape 4.Differnt numbers of e pairs result in different shapes |
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A tetrahedrak shape |
Angle 109.5' |
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Electronegativity? |
The attraction of a bonded atom for the pair of electrons in a comment bond |
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Polar bonds |
The bonded e pair is shared unequally between the bonded atoms |
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Intermolecular forces |
They are weak interactions between dipoles of different molecules |
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London forces? |
Induced dipole-dipole interaction exist between all molecules |
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Permanent dipole-dipole interaction |
Acting between the permanent dipoles in different polar molecules |
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Hydrogen bond? |
It is a special type of permanent dipole-dipole interaction acts between a line pair of e on an electronegative atom in one molecule and a hydrogen atom in a different molecule |
