Aluminium (Al)

Aluminium is a chemical element of the periodic table with chemical symbol Al and atomic number 13 with an atomic weight of 26.9815 u and is classed as post-transition metal and is part of group 13 (boron group). Aluminium is solid at room temperature.

Aluminium in the periodic table

SymbolAl
Atomic number13
Group13 (Boron group)
Period3
Blockp
ClassificationPost-Transition Metal
AppearanceSilvery gray metallic
Color Silver
Number of protons13 p +
Number of neutrons14 n 0
Number of electrons13 e -

Wikipedia

From Wikipedia, the free encyclopediaAluminium (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.

Physical properties

Phase at STP Solid
Density2.7 g/cm 3
Atomic weight26.9815 u