13 Al 26.98153857
Aluminium
POST-TRANSITION METAL
Phase: Solid
Discovered: Ancient
Block: P
Summary
Aluminium (or aluminum; see different endings) is a chemical element in the boron group with symbol Al and atomic number 13. It is a silvery-white, soft, nonmagnetic, ductile metal. Aluminium is the third most abundant element (after oxygen and silicon), and the most abundant metal, in the Earth's crust.
Source: WikipediaPhysical Properties
Atomic Mass 26.98153857 u
Density 2.7 g/cm³
Melting Point 933.47 K
Boiling Point 2743 K