Lutetium

Lanthanide · atomic number 71

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Lutetium is a chemical element with symbol Lu and atomic number 71. It is a silvery white metal, which resists corrosion in dry, but not in moist air. It is considered the first element of the 6th-period transition metals and the last element in the lanthanide series, and is traditionally counted among the rare earths.

Properties of Lutetium

Element category	Lanthanide
Atomic number	71
Atomic mass	174.96681 u
Phase at STP	Solid
Group	3
Period	6
Block	d
Electron configuration	[Xe] 4f14 5d1 6s2
Electrons per shell	2, 8, 18, 32, 9, 2
Electronegativity (Pauling)	1.27
Melting point	1925 K (1652 °C)
Boiling point	3675 K (3402 °C)
Density	9.841 g/cm3
Discovered by	Georges Urbain

← Ytterbium · Periodic table · Hafnium → Hf

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/Lutetium

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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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