MetalsRevision

• In a metal crystal the atoms are packed as close together as possible.

• This is a giant structure.

• Metallic bonding is strong bonding.• Each metal atom contributes one or two

electrons to a shared ‘sea’ of electrons.• The shared bonding electrons can move through

the whole metal structure.

Metallic Bonding

• The outer electrons are allowed to move throughout the metallic structure to form a ‘sea of electrons’

• The metal atoms are left with a positive charge and are attracted to the negative ‘sea of electrons’

You need to be able to represent the bonding in a metal like this…

Copy and annotate this diagram

Cu Cu Cu Cu Cu Cu Cu Cu

Cu Cu Cu Cu Cu Cu Cu Cu

Cu Cu Cu Cu Cu Cu Cu Cu

Cu Cu Cu Cu Cu Cu Cu Cu

Metallic LatticesForceApplied