03. Metallic bonding

How do metal elements exist?

Exist as giant metallic lattice structures

What occurs in metallic bonding?

Metal atoms contribute 1 or more electrons from valence shell into sea of delocalised electrons

What occur as a result of metal atoms contributing 1 or more electrons from valence shell?

Results in sea of delocalised electrons surrounding positive ions

What indicates a stronger bond?

The more electrons that are delocalised

What do the more electrons that are delocalised indicate?

A stronger bond

What is metallic bonding?

Strong electrostatic forces of attraction between the metal centres and delocalised electrons

Describe the delocalised electrons?

Free to move through the metal

What happens once outer electrons are delocalised?

Positive metal centres are suspended in sea of electrons

Describe how the ions are structured?

Closely packed together -> high coordination numbers

What is the coordination in many metals? Why?

12 ions as they have the same radius

What are the properties of metallic bonding?

Conducts e^- and heat, malleable, high density MPT and BPT