1. Metallic Bonding

2. Bonding in Metals
Metals have relatively few electrons in their outshell.
When they are closely packed together the atoms lose their outer electrons into a „sea of electrons“.

3. Metallic Bonding
Having lost the electrons the atoms become positive ions.
The structure of a metal is made up of tightly packed positive ions surrounded by electrons.
The free electrons are called delocalised electrons and form a type of glue holding the structure together.

4. Metallic Bonding

5. Metallic Bonding
In an electric circuit metals can conduct electricity because the free electrons can move through the circuit to carry the current.
Metal bonding in alloys is the same.