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What is today about ?

METAL LO: Describe the structure of metals (D) Explain how metals form bonds (C) Explain why the properties of a metal occur (B) Use the model of metallic bonding to account for the properties of metals (A/A*) Starter Do metals have high or low melting points ? What does this tell you about the bonding of the atoms ?

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Metallic Bonding Fixed metal ions Sea of delocalised electrons More electrons in the outer shell = More electrons in the sea This makes the bond even stronger. The metals will have a higher melting point.

Properties

Properties Conduct electricity Conduct heat Shiny appearance Malleable Ductile Sonorous

Metallic Bonding Metallic Bonding

Metallic Bonding Metallic Bonding

Metals are ductile and malleable because the metal ions are free to slide on each other in the sea of delocalised electrons.

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