Atomic Number: 13 Period Number: 3 Group Number:13
Aluminum is a white, soft metal and it ranks the third of most abundant elements in the world. It exists in most common two ways-alum, such as potassium aluminum sulfate (KAl(SO4)2·12H2O), and aluminum oxide (Al2O3).
Aluminum alloy is widely used in making cans, foils, parts of airplane, etc. Because Aluminum alloy helps to modify strength of aluminum. Aluminum also can be used as electrical transmission line because of its light weight.
The most common compounds of Aluminum are Alumina (Al2O3), Aluminum sulfate (Al2(SO4)3(H2O)18) and Aluminum chloride (AlCl3). Most production of the Aluminum sulfate is used for water treatment and Aluminum chloride is used to produce polymers and rubbers.
Physical & Chemical properties:
Atomic Weight: 26.9815386
Melting Point: 933.437 K
Boiling Point: 2792 K
Density: 2.70 g/cm3
Phase at Room Temperature: Solid
Ionization Energy: 5.986 eV
Oxidation State: +3
Wikipedia - Basics on Aluminum
WebElements - The basic elements of Aluminum
Jefferson Lab - Learning about Alumnium