Скандиум: Хүчирхэг функцтэй боловч бага гаралттай, …
Scandium, whose chemical symbol is Sc and its atomic number is 21, is a soft, silvery-white transitional metal. It is often mixed with gadolinium, erbium, etc., with little output and high price. The main valence is oxidation state+trivalent. Scandium exists in most rare earth minerals, but only...