Aluminium is an element in the Boron group of the periodic table with the atomic number of 13. Only Oxygen and Silicone are more abundant in the Earth’s crust than Aluminium with the soft ductile metal accounting for approximately 8% by weight of the solid surface. Due to its spare spaces in its electron ring, Aluminium is extremely reactive. This means that it is rarely found in its unbound natural state. Instead Al is nearly always found bound to minerals, most commonly occurring in Bauxite (a rock often containing Aluminium, Iron and Titanium individually bound to Hydrogen and Oxygen molecules). Aluminium is unique for its anti-corrosive properties.