• A metal salt, such as those elements found in the first two columns of the periodic table (e.g. Sodium, Magnesium).
  • Solid at room temperature.
  • Shiny and silvery in appearance.
  • Has a high atomic number, therefore lots of protons and electrons.
  • The number of electrons means that it is suitable for splitting (i.e. Nuclear power), but it is much more stable than Uranium.
  • It is flammable, burns with a purple flame, and reactive with water.