A rare metallic element of the boron group, whose existence was predicted under the provisional name ekaboron by means of the periodic law, and subsequently discovered by spectrum analysis in certain rare Scandinavian minerals (euxenite and gadolinite). It has not yet been isolated. Symbol Sc. Atomic weight 44.

A chemical element with atomic number 21. Scandium was discovered in 1879 by Lars Fredrik Nilson in experiments on the minerals euxenite and gadolinite. The name scandium is derived from Scandia, the Latin name for Scandinavia. Symbol: Sc. Related to rare earths. Related to transition metals.

a white trivalent metallic element; sometimes classified in the rare earth group; occurs in the Scandinavian mineral thortveitite