Metallic bonds

Properties of Metals

Malleable, shiny , ductile and conduct electricity

What is a metal made up of

Lattice of cations surrounded by a ‘sea’ of delocalized electrons

What is metallic bonding

Electrostatic attraction between cation and delocalized electron of a whole lump of metal

Why is metal malleable and ductile

Layers of cations in metal can slide without breaking

What is ductile

can be stretched into wires

Difference between liquid metal and solid metal

Liquid metal is not ductile and malleable but still carry charge

What happens to metallic bond across period

Increases as more protons so cations have a higher charge and number of delocalized electrons per cations increases so MP and BP increases

What happens to metallic bond down a group

Melting point decreases down a group size of cation increases between cation and delocalized electron increases, weaker attraction , weaker metallic bond

What is a