Electronic data		Thermal data		Steric data
Shells: 2,8,9,2 Orbitals: [Ar] 3d1 4s2 Electronegativity: 1.2, 1.3 1. Ionization potential: 6.5614 eV 2. Ionization potential: 12.80 eV 3. Ionization potential: 24.76 eV Oxidation states: 3 Electrical conductivity: 0.0177 10^6		Melting point: 1541 °C Boiling point: 2830 °C Specific heat: 0.6 J/gK Heat of fusion: 14.10 kJ/mol Heat of vaporization: 314.20 kJ/mol Thermal conductivity: 0.158 W/cmK		Atomic radius: 2.09 Å Ionic radius: 0.75 Å () Covalent radius: 1.44 Å Atomic volume: 15.0 cm³/mol Density (293 K): 3.0 g/cm³ Crystal structure: Hexagonal

Legend     Pocket calculator

Nuclide	Abundance [%]	Mass	Spin	Halflife	Decay mode	Decay tree
44Sc	0	44	2	3.927h	+,EC	View
45Sc	100	44.9559	7/2	--	stable	--
46Sc	0	45.955	4	83.81d	-	View
46Scm	0	46	1	18.72s	IT	View
47Sc	0	47	7/2	3.349d	-	View
48Sc	0	48	6	43.67h	-	View
49Sc	0	49	7/2	57.3m	-	View

Legend

Name origin:	Latin: Scandia, Scandinavia
Description:	Fairly soft, silvery-white metal. Eighth most abundant 'rare earth' found in the earth's crust (5.0 ppm).
Discovered by:	Lars Nilson
Year:	1879
Place:	Sweden
Sources:	Occurs mainly in the minerals thortveitile (~34% scandium) and wiikite. Also in some tin and tungsten ores. Pure scandium is obtained as a by-product of uranium refining.
Use(s):	Scandium metal is used in some aerospace applications. Scandum oxide (Sc2O3) is used in the manufacture of high-intensity electric lamps. Scandium iodide (ScI3) is used in lamps that produce light having a color closely matching natural sunlight.