Metallic Bonding
Metals take giant lattice structures, regular repeating structures of metal atoms
Outer shells of atoms merge together to form a sea of delocalised electrons, can move freely.
Electrostatic forces of attraction between positive metal ion and negative electrons , holds metal together, makes it very strong
Strong = lots of energy to be broken = high melting & boiling points.
Layers of atoms can slide over each other = malleable
Good conductors because delocalised electrons can carry current