62
Sm
Samarium
Samarium
Samarium (Sm)
Lanthanides · Solid · Period 6 · Group 3
Element Properties
- Atomic Number
- 62
- Symbol
- Sm
- Atomic Mass
- 150.4
- Category
- Lanthanides
- Standard State
- Solid
- Period
- 6
- Group
- 3
- Electronegativity
- 1.17
- Atomic Radius
- 229
- Ionization Energy
- 5.64
- Electron Affinity
- —
- Oxidation States
- +3, +2
- Melting Point
- 1347 K (1073.85 °C)
- Boiling Point
- 2067 K (1793.85 °C)
- Density
- 7.52
- Electron Configuration
- [Xe]6s2 4f6
- Year Discovered
- 1879
Electron shells
[Xe]6s2 4f6
Electrons are arranged in shells (principal energy levels) around the nucleus. The diagram is a schematic — orbitals in the same shell are not drawn separately.
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Frequently asked questions
What is the atomic number of Samarium?
The atomic number of Samarium is 62, which equals the number of protons in its nucleus.
What is the atomic mass of Samarium?
The atomic mass of Samarium is approximately 150.4 u (one twelfth of the mass of a carbon-12 atom).
What is the electron configuration of Samarium?
The electron configuration of Samarium is [Xe]6s2 4f6.
Where is Samarium in the periodic table?
Samarium is located in period 6, group 3.
When was Samarium discovered?
Samarium was discovered in 1879.
Related elements
Same group
21
Sc
Scandium
44.956
39
Y
Yttrium
88.906
57
La
Lanthanum
138.905
58
Ce
Cerium
140.116
59
Pr
Praseodymium
140.908
60
Nd
Neodymium
144.24