AS Chemistry- Metallic Bonding

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Created by: ambermeganjones
Created on: 24-04-16 15:51

Define metallic bond

The electrostatic attraction between a lattice of positive metal ions and delocalised electrons.

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A positive ion is called a..

..cation

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A negative ion is called an..

..anion

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Explain why the strength of the metallic bonding increases from sodium to aluminium

From sodium to aluminium, the charge on the cations increases. Also, the number of delocalised electrons per ion increases. Therefore, the attraction between the cations and delocalised electrons increases. More heat energy is required to bre

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What structure do metals have?

Giant metallic latice

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Describe the melting point of metals

High melting point - a lot of energy is needed to overcome the strong electrostatic attraction between the metal cations and delocalised electrons

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Describe the solubility of metals

Low solubility - the metallic bonding is stronger than the attraction of the polar water molecules for the metal ions. (NB some metals will react with water)

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Describe the conductivity of metals

High electrical conductivity - delocalised electrons can carry electrical current.

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