62
Sm
150.36
Samarium (Sm)
Element 62 · Period 6 · Lanthanide series
lanthanide
solid at room temp
f-block
About Samarium
Used in SmCo permanent magnets and cancer treatment. Discovered in Urals mineral.
Physical Properties
Atomic Mass
150.36 u
State at 25°C
Solid
Melting Point
1072 °C
Boiling Point
1794 °C
Density
7.52 g/cm³
Magnetism
Paramagnetic
Atomic Properties
Electron Configuration
[Xe] 4f⁶ 6s²
Electron Shells
2, 8, 18, 24, 8, 2
Electronegativity
1.17
Atomic Radius
229 pm
Ionization Energy
545 kJ/mol
Oxidation States
+2, +3
Discovery & History
Discovered By
Lecoq de Boisbaudran
Discovery Year
1879
Named By
Lecoq de Boisbaudran
Name origin: Mineral samarskite
Frequently Asked Questions
- Is Samarium a metal, nonmetal, or metalloid?
- Samarium is classified as a lanthanide.
- What state is Samarium in at room temperature?
- Samarium is a solid at standard room temperature (25°C).
- What is the atomic mass of Samarium?
- Samarium has an atomic mass of 150.36 atomic mass units (u).
- Who discovered Samarium?
- Samarium was discovered by Lecoq de Boisbaudran in 1879.
- Where is Samarium on the periodic table?
- Samarium is element number 62, located in period 6, part of the lanthanide series shown below the main table.