Cerium
Symbol
Ce
Atomic Number
58
Atomic Weight
140.115
Element Classification
Discovered By
W. von Hisinger, J. Berzelius, M. Klaproth
Discovery Date
1803 (Sweden/Germany)
Name Origin
Named after the asteroid, Ceres, discovered two years before the element.
Density (g/cc)
6.757
Melting Point (K)
1072
Boiling Point (K)
3699
Appearance
Malleable, ductile, iron-gray metal
Atomic Radius (pm)
181
Atomic Volume (cc/mol)
21.0
Covalent Radius (pm)
165
Ionic Radius
92 (+4e) 103.4 (+3e)
Specific Heat
0.205
Fusion Heat (kJ/mol)
5.2
Evaporation Heat (kJ/mol)
398
Thermal Conductivity (@25°C W/m K)
11.3
Debye Temperature (K)
n/a
Pauling Negativity Number
1.12
First Ionizing Energy (kJ/mol)
540.1
Oxidation States
4, 3
Electronic Configuration
[Xe] 4f1 5d1 6s2
Lattice Structure
Face-Centered Cubic(FCC)
Lattice Constant
5.160
Lattice C/A Ratio
n/a
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