Scandium (original) (raw)

2020, Priyamstudycentre

Scandium (Sc), chemical element or rare-earth metal of Group 3 of the periodic table has only one common oxidation number or state +3 with no d-electron. Scandium is a silvery-white, moderately soft metal that usually occurs with the lanthanides due to the lack of the characteristics of transition elements. The chemistry of scandium resembles the metal aluminum and Russian chemist Dmitry Ivanovich Mendeleyev named it ekaboron. The silvery-white hexagonal crystal lattice, scandium has the chemical symbol Sc, atomic number 21, atomic weight 44.956, melting point 1539 °C, boiling point 2836°C , density 2.985 gm/cm3, and valence shell electronic configuration [Ar] 3d 4s. The common oxidation number or states of metal +3 with no electron in the valence d-orbitals. 1 2