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Samarium Properties
Samarium


Physical
0
Melting Point
1,072.00 °C 41
Boiling Point
1,900.00 °C 52
Hardness
0
Mohs Hardness
Not Available 0
Brinell Hardness
441.00 MPa 27
Vickers Hardness
412.00 MPa 24
Optical Properties
0
Refractive Index
Not Available 0
Reflectivity
Not Available 0
Speed of Sound
2,130.00 m/s 42
Allotropes
No 0
α Allotropes
Not Available 0
β Allotropes
Not Available 0
γ Allotropes
Not Available 0
Chemical
0
Chemical Formula
Sm 0
Isotopes
0
Known Isotopes
30 9
Electronegativity
0
Pauling Electronegativity
1.17 40
Sanderson Electronegativity
Not Available 0
Allred Rochow Electronegativity
1.07 32
Mulliken-Jaffe Electronegativity
Not Available 0
Allen Electronegativity
Not Available 0
Electropositivity
0
Pauling Electropositivity
2.83 14
Ionization Energies
0
1st Energy Level
544.50 kJ/mol 72
2nd Energy Level
1,070.00 kJ/mol 75
3rd Energy Level
2,260.00 kJ/mol 59
Electrochemical Equivalent
1.87 g/amp-hr 34
Electron Work Function
2.70 eV 41
Other Chemical Properties
Ionization, Radioactive Isotopes 0
Mechanical
0
Density
0
Density At Room Temperature
7.52 g/cm3 53
Density When Liquid (at m.p.)
7.16 g/cm3 32
Vapor Pressure
0
Vapor Pressure at 1000 K
0.94 (Pa) 9
Vapor Pressure at 2000 K
Not Available 0
Tensile Strength
Not Available 0
Viscosity
Not Available 0
Elasticity properties
0
Shear Modulus
19.50 GPa 34
Bulk Modulus
37.80 GPa 35
Young's Modulus
49.70 GPa 37
Poisson Ratio
0.27 19
Other Mechanical Properties
NA 0
Periodic Table
0
Symbol
Sm 0
Group Number
Not Available 0
Period Number
6 2
Block
f block 0
Element Family
Lanthanide 0
Atomic
0
Atomic Number
62 54
Atomic Weight
150.36 amu 48
Atomic Volume
19.95 cm3/mol 19
Electron Configuration
[Xe] 4f6 6s2 0
Valence Electron Potential
44.80 (-eV) 37
Atom
0
Number of Protons
62 53
Number of Neutrons
88 39
Number of Electrons
62 53
Crystal Structure
Rhombohedral (RHO) 0
Crystal Lattice
RHO-Crystal-Structure-of-Samarium.jpg#100 0
Radius of an Atom
0
Atomic Radius
180.00 pm 14
Covalent Radius
198.00 pm 13
Van der Waals Radius
229.00 pm 20
Lattice Constant
362.10 pm 33
Lattice Angles
π/2, π/2, 2 π/3 0
Lattice C/A Ratio
Not Available 0
Adjacent Atomic Numbers
0
Next Element
73 0
Previous Element
74 0
Magnetic
0
Electrical Properties
0
Resistivity
0.94 nΩ·m 61
Electrical Conductivity
0.01 106/cm Ω 58
Electron Affinity
50.00 kJ/mol 21
Electrical Property
Conductor 0
Magnetic Characteristics
0
Specific Gravity
7.52 41
Magnetic Ordering
Paramagnetic 0
Permeability
Not Available 0
Susceptibility
Not Available 0
Thermal
0
Specific Heat
0.20 J/(kg K) 31
Thermal Conductivity
13.30 W/m·K 58
Critical Temperature
Not Available 0
Molar Heat Capacity
29.54 J/mol·K 7
Thermal Expansion
12.70 µm/(m·K) 30
Standard Molar Entropy
69.60 J/mol.K 15
Enthalpy
0
Enthalpy of Vaporization
166.40 kJ/mol 44
Enthalpy of Fusion
8.62 kJ/mol 40
Enthalpy of Atomization
209.00 kJ/mol 43
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