Model Number: GK-189 Brand Name: GENPHOAL Key Specifications/Special Features: Scandium is a chemical element with symbol Sc and atomic number 21Silvery-white metallic d-block element, it has historically been sometimes classified as a rare earth element, together with yttrium and the lanthanidesDiscovered in 1879 by spectral analysis of the minerals euxenite and gadolinite from ScandinaviaScandium is present in most of the deposits of rare earth and uranium compounds, but it is extracted from these ores in only a few mines worldwideBecause of the low availability and the difficulties in the preparation of metallic scandium, which was first done in 1937, it took until the 1970s before applications for scandium were developedPositive effects of scandium on aluminum alloys were discovered in the 1970s and its use in such alloys remains its only major applicationGlobal trade of the pure metal is around fifty kilograms per year on average
Properties of scandium compounds are intermediate between those of alumnium and yttrium
Diagonal relationship exists between the behavior of magnesium and scandium, just as there is between beryllium and alumnium
In the chemical compounds of the elements in group 3, the predominant oxidation state is +3

Properties:

Chemical characteristics of the element

Scandium is a soft metal with a silvery appearance
Develops a slightly yellowish or pinkish cast when oxidized by air
Susceptible to weathering and dissolves slowly in most dilute acids
Does not react with a 1:1 mixture of nitric acid (HNO3) and 48% hydrofluoric acid (HF), possibly due to the formation of an impermeable passive layer
Scandium turnings ignite in air with a brilliant yellow flame to form scandium(III) oxide