Name: scandium
Symbol: Sc
Atomic number: 21
Atomic weight: 44.955910 (8)
Group in periodic table: 3
Group name:
Period in periodic table: 4
Block in periodic table: d-block
CAS registry ID: 7440-20-2
Scandium is apparently a much more abundant element in the sun and certain stars than on earth.
Scandium is a silvery-white metal which develops a slightly yellowish or pinkish cast upon exposure to air. It is relatively soft, and resembles yttrium and the rare-earth metals more than it resembles aluminium or titanium. Scandium reacts rapidly with many acids.