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21Sc

Scandium

스칸듐 · スカンジウム

Transition metal

Atomic number21
ElementScScandium
Atomic mass44.956
CategoryTransition metal
Group3
Period4
Electron config[Ar] 3d1 4s2
Shells2,8,9,2
State (RT)Solid
Melting pt1541°C
Boiling pt2836°C
Electronegativity1.36
Discovered1879
Main usesAerospace, sports equipment alloys
Sc21
2 · 8 · 9 · 2
Bohr model

Group 3