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Scandium


4
21
44.95591
KEY
Chemical Element Symbol Key

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Scandium
Columbia Encyclopedia
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Symbol: Sc
Atomic Number: 21
Atomic Weight: 44.95591
Element Classification: Transition Metal
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 (@20°C J/g mol): 0.556
Fusion Heat (kJ/mol): 15.8
Evaporation Heat (kJ/mol): 332.7
Thermal Conductivity (@25°C W/m K):
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 (Å): 3.310
Lattice C/A Ratio: 1.594


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