Name: Lutetium

Atomic Symbol and Mass Number: Lu [71]

Electron Configuration: [Xe] 4f   5d   6s 

Atomic Radii: 174 pm

Electron Affinity: 50 kJ/mol

Oxidation States: +3, +2, +1

Electronegativity Value: 1.27

Elemental Group: Lanthanide

Uses and Properties:

• Lutetium is a silvery white metal that is quite soft and ductile.

• The term ductile means capable of being drawn into thin wires.

• It has a melting point of 1,652 °C (3,006°F) and a boiling point of 3,327° (6,021°F). Its density is 8.49 grams per cubic centimeter.

• Lutetium oxide is used to make catalysts for cracking hydrocarbons in the petrochemical industry.

• Lu is used in cancer therapy and because of its long half-life, 176Lu is used to date the age of meteorites.

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Lewis Diagram: