Metallic Bonding in Metals and Alloys
Introduction
- Metallic bonding occurs between atoms in metals or alloys (mixtures of metals).
- Example: Copper wire (insulated with plastic) is used to illustrate.
- Atoms are arranged in a structured lattice.
- Outermost shells of the metal atoms contain electrons.
- Diagrammatic representation shows metal atoms with one electron each in the outermost shell (simplification for explanation).
- Electrons are loosely held by the atoms.
- Electrons can easily move away from the atoms.
- When electrons move away, atoms become positively charged ions.
- Metal ions are formed with a positive charge.