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COVALENT BOND - Coggle Diagram
COVALENT BOND
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simple molecules
formed by single, double or triple covalent bonds
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- poor conductors of electricity
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Atoms are held together by electrostatic force of attraction between the shared pair of electrons and the nuclei of both atoms
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Properties: High m.p, hard, colourless, shiny. -does not conduct electricity
- Diamond
-three-dimensional
-every carbon atom is covalently bonded to 4 other carbon atoms,
-no free electrons, all 4 e form bonds
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- Silicon (IV) oxide - structure and properties similar to diamond
- Graphite :
-only 3 electrons form covalent bonds with 3 other carbon atoms
-1 electron is free
-Arranged in hexagonal layers held together by weak forces.
-The layers can slide over each other
Properties - soft, slippery - high m.p -good conductor of electricity