1. Education
You can opt-out at any time. Please refer to our privacy policy for contact information.

Discuss in my forum

Lutetium Facts

Chemical & Physical Properties of Lutetium

By

This is a photo of a 1-cm chunk of pure lutetium. Lutetium is a silvery-white metal.

This is a photo of a 1-cm chunk of pure lutetium. Lutetium is a silvery-white corrosion-resistant metal.

Jurii, Creative Commons License
Periodic Table of the Elements

Lutetium (German Cassiopeium)

Atomic Number: 71

Symbol: Lu

Atomic Weight: 174.967

Discovery: Georges Urbain 1907 (France)

Electron Configuration: [Xe] 4f14 5d1 6s2

Element Classification: Rare Earth (Lanthanide Series)

Word Origin: Named for the ancient name of Paris, Lutecia.

Density (g/cc): 9.8404

Melting Point (K): 1936

Boiling Point (K): 3668

Appearance: silvery-white, hard, dense metal

Atomic Radius (pm): 175

Atomic Volume (cc/mol): 17.8

Covalent Radius (pm): 156

Ionic Radius: 85 (+3e)

Specific Heat (@20°C J/g mol): 0.155

Evaporation Heat (kJ/mol): 414

Pauling Negativity Number: 1.27

First Ionizing Energy (kJ/mol): 513

Oxidation States: 3

Lattice Structure: Hexagonal

Lattice Constant (Å): 3.510

Lattice C/A Ratio: 1.585

References: Los Alamos National Laboratory (2001), Crescent Chemical Company (2001), Lange's Handbook of Chemistry (1952), CRC Handbook of Chemistry & Physics (18th Ed.)

Return to the Periodic Table

Chemistry Encyclopedia

©2014 About.com. All rights reserved.