Scandium
Symbol
Sc
Atomic Number
21
Atomic Weight
44.95591
Element Classification
Discovered By
Lars Nilson
Discovery Date
1879 (Sweden)
Name Origin
Latin: Scandia, Scandinavia.
Density (g/cc)
2.99
Melting Point (K)
1814
Boiling Point (K)
3104
Appearance
Fairly soft, silvery-white metal
Atomic Radius (pm)
162
Atomic Volume (cc/mol)
15.0
Covalent Radius (pm)
144
Ionic Radius
72.3 (+3e)
Specific Heat
0.556
Fusion Heat (kJ/mol)
15.8
Evaporation Heat (kJ/mol)
332.7
Thermal Conductivity (@25°C W/m K)
15.8
Debye Temperature (K)
n/a
Pauling Negativity Number
1.36
First Ionizing Energy (kJ/mol)
630.8
Oxidation States
3
Electronic Configuration
[Ar] 3d1 4s2
Lattice Structure
Hexagonal(HEX)
Lattice Constant
3.310
Lattice C/A Ratio
1.594
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