Scandium atom is a rare earth metal atom, a scandium group element atom and a d-block element atom.
An element of the rare earth family of metals. It has the atomic symbol Sc, atomic number 21, and atomic weight 45.
The properties of scandium compounds are intermediate between those of aluminium and yttrium. A diagonal relationship exists between the behavior of magnesium and scandium, just as there is between beryllium and aluminium.
In the chemical compounds of the elements in group 3, the predominant oxidation state is +3.
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.