Samarium
Symbol
Sm
Atomic Number
62
Atomic Weight
150.36
Element Classification
Discovered By
Jean Charles Galissard de Marignac
Discovery Date
1853 (France)
Name Origin
Named after the mineral samarskite.
Density(g/cc)
7.520
Melting Point
1350
Boiling Point(K)
2064
Appearance
Silvery rare-earth metal
Atomic Radius(pm)
181
Atomic Volume(cc/mol)
19.9
Covalent Radius(pm)
162
Ionic Radius
96.4 (+3e)
Specific Heat
0.180
Fusion Heat
8.9
Evaporation Heat(kj/mol)
165
Thermal Conductivity(@25°C W/m K)
(13.3)
Debye Temperature
166.00
Pauling Negativity Number
1.17
First Ionizing Energy(kj/mol)
540.1
Oxidation States
3, 2
Electronic Configuration
[Xe] 4f6 6s2
Lattice Structure
Rhombohedral(RHL)
Lattice Constant
9.000
Lattice C/A Ratio
n/a
