Samarium

Lanthanide · atomic number 62

62150.362SmSamariumSolidLanthanide

Samarium is a chemical element with symbol Sm and atomic number 62. It is a moderately hard silvery metal that readily oxidizes in air. Being a typical member of the lanthanide series, samarium usually assumes the oxidation state +3.

Properties of Samarium

Element category	Lanthanide
Atomic number	62
Atomic mass	150.362 u
Phase at STP	Solid
Group	3
Period	6
Block	f
Electron configuration	[Xe] 4f6 6s2
Electrons per shell	2, 8, 18, 24, 8, 2
Electronegativity (Pauling)	1.17
Melting point	1345 K (1072 °C)
Boiling point	2173 K (1900 °C)
Density	7.52 g/cm3
Discovered by	Lecoq de Boisbaudran

← Promethium · Periodic table · Europium → Eu

About the lanthanide group

The rare-earth “inner transition” metals that give strong permanent magnets, screen phosphors and catalyst polish.

Data: Periodic-Table-JSON (CC BY-SA 3.0) · stored statically on our server. https://en.wikipedia.org/wiki/Samarium

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15 elements: The rare-earth “inner transition” metals that give strong permanent magnets, screen phosphors and catalyst polish.

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