electronegativity
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- Created by: Jasmin
- Created on: 23-01-14 08:24
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- Electronegativity
- Increases across a period and decreases down a group
- Tetrahedral olecules of for AB4 are not polar
- NH3 3 bond pairs, 1 lone pair polarities do not cancel, so the molecule is polar
- Trigonal planar are not polar because bond polarities cancel out
- Linear molecules non polar since dipoles cancel out
- Simple test to find whether a liquid consists of polar molecules is to:
- Run a stream of water from a burette near a charged rod
- If the water is attracted towards the rod, the liquid contains polar molecules
- Run a stream of water from a burette near a charged rod
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