METALS: Giant structure of positive ions surrounded by a sea of delocalised electrons
Diagram:
Diagram Showing a Metallic Lattice
PROPERTIES OF METALS:
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PROPERTY
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REASON
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HIGH MELTING AND BOILING POINT
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There are many strong metallic bonds in giant metallic structure so large amounts of heat energy is needed to overcome forces and break down bonds
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GOOD CONDUCTORS OF ELECTRICITY
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Delocalised electrons are free to move to conduct an electric charge when a potential difference is applied across the Metal
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MALLEABLE AND DUCTILE
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Layers of positive ions can easily slide over one another and take up different positions. Delocalised electrons will move with them so metallic bonds are not broken
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