Aluminum

Element Aluminum

Aluminium (aluminum in American and Canadian English) is a chemical element with the symbol Al and atomic number 13.
It is a silvery-white, soft, non-magnetic and ductile metal in the boron group.
By mass, aluminium makes up about 8% of the Earth’s crust; it is the third most abundant element after oxygen and silicon and the most abundant metal in the crust, though it is less common in the mantle below.
Aluminum powder, coated appears as a light gray or silver powdered metal. Easily ignited; burns with an intense flame.

It is the only aluminium isotope that has existed on Earth in its current form since the creation of the planet. Very nearly all the element on Earth is present as this isotope, which makes aluminium a mononuclidic element and means that its standard atomic weight practically equates to that of the isotope.