Lu

Lutetium

Atomic Number 71 · Metal piece

The last and heaviest of the lanthanides. Used in PET scan detectors and as a catalyst in petroleum refining.

Atomic Mass

174.97 u

Category

Lanthanide

Phase (STP)

Solid

Density

9.84 g/cm³

Melting Point

1652 °C

Boiling Point

3402 °C

Electronegativity

1.27 (Pauling)

Atomic Radius

175 pm

Electron Configuration

[Xe] 4f14 5d1 6s2

Discovered

1907 — Georges Urbain

Find Lutetium Samples

Sample form: Metal piece

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Various element samples and collections

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