Scandium

Transition Metal

Atomic Number: 21 • Atomic Mass: 44.9560 u • Period: 4 • Group: 3

Electron Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹

Phase: Solid

Electronegativity: 1.36

History

Scandium has been known since ancient times

Predicted by Mendeleev in 1869 as 'ekaboron'

Discovered during the search for rare earth elements

Pure scandium metal wasn't produced until 1937