Latin nameScandium
English nameScandium
chemical symbolSc
atomic number21
relative atomic mass44,95591
classificationtransition metals
discovery year1879
discovererL. F. Nilson
melting point [°C]1541
boiling point [°C]2836
density [g cm-3]3,0
density at melting point [g cm-3]2,8
electronegativity [Pauling]1,36
standard electrode potential [V]−2,03
oxidation statesI, III
electron configuration[Ar]3d1 4s2
specific heat [J g-1K-1]0,6
heat of fusion [kJ mol-1]14,1
thermal conductivity [W m-1 K-1]15,8
el. conductivity [S m-1]1,8.106
1. ionizing potential [eV]6,5614
2. ionizing potential [eV]12,8
3. ionizing potential [eV]24,76
Mohs hardness2,5
Brinell hardness [MPa]750
shear modulus [GPa]29
Young's modulus [GPa]74
point of superconductivity [K]0,05
state at normal conditionssolid