On this page I'll provide comprehensive data for Samarium. I hope you profit from it.
Samarium Overview
Name Origin
Named after the mineral samarskite.
Symbol
Sm (Samarium)Description
Silvery rare earth metal.
Discovery
Discovered By: Paul Émile Lecoq de Boisbaudran
Year: 1879
Location: France
Sources
Found with other rare earths in monazite sand. The sand is often 50% rare earths by weight and 2.8% samarium.
Uses
It is used in the electronics and ceramics industries. It is easily magnetized and very difficult to demagnetize. This suggests important future applications in solid-state and superconductor technologies.
State at 20 °C
Solid
Group
Group Name: Rare EarthÂ
Group in periodic table: 0
Period in periodic table:Â 6
Atomic Number
62Learn more about the atomic number.
Atomic Mass
150,36
Learn more about the atomic mass.
Stable Isotopes
Sm144 percent abundance: 3.07% Sm147 percent abundance: 14.99% Sm148 percent abundance: 11.24% Sm149 percent abundance: 13.82% Sm150 percent abundance: 7.38% Sm152 percent abundance: 26.75% Sm154 percent abundance: 22.75%
Learn more about stable isotopes.
Radioactive Isotopes
Sm145-146, Sm151, Sm153, Sm155-156
Learn more about radioactive isotopes.
Atomic Structure
Crystalline Structure
Rhombohedral
Learn more about crystalline structure
Shells
Electrons per energy level: 2,8,18,24,8,2
Learn more about electron shells
Electron Configuration
1s2 2s2 2p6 3s2 3p6 4 s2 3 d10 4 p6 5 s2 4 d10 5 p6 6 s2 4 f6
Learn more about electron configuration.
Abbreviated Configuration
[Xe] 4f6 6s2
Learn more about abbreviated electron configuration.
Valence Electrons
2,3
Learn more about valence electrons
Atom Size
Atomic Radius
2.59 Ã…
Learn more about atomic radius.
Covalent Radius
1.62 Ã…
Learn more about covalent radius.
Ionic Radius
1.08 (+3) Ã…
Learn more about ionic radius.
Molar Volume
19.95 cm³/mol
Learn more about molar volume.
Chemical Properties
Common Oxidation States
First Ionization Energy
First Ionization Potential
Second Ionization Potential
Third Ionization Potential
Physical Properties
Density
Electrical Conductivity
Thermal Conductivity
Elastic Modulus
Coefficient of Thermal Expansion
Learn more about coefficient of thermal expansion.
Heat Properties
Other heat related physical properties:
Melting Point
Boiling Point
Specific Heat
0.20 J/gK
Learn more about specific heat.
Learn more about specific heat.
Heat of Fusion
8.630 kJ/mol
Learn more about heat of fusion.
Heat of Vaporization
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