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

Discuss in my forum

Neodymium Facts

Chemical & Physical Properties of Neodymium

By

This is a 1 cm sample of ultrapure neodymium stored under argon to prevent oxidation.

Neodymium is a soft, silvery lanthanide metal. This is a 1 cm sample of ultrapure neodymium stored under argon to prevent oxidation.

unknown, Wikipedia Commons
Periodic Table of the Elements

Neodymium

Atomic Number: 60

Symbol: Nd

Atomic Weight: 144.24

Element Classification: Rare Earth Element (Lanthanide Series)

Discoverer: C.F. Ayer von Weisbach

Discovery Date: 1925 (Austria)

Name Origin: Greek: neos and didymos (new twin)

Density (g/cc): 7.007

Melting Point (K): 1294

Boiling Point (K): 3341

Appearance: silvery-white, rare earth metal that oxidizes readily in air

Atomic Radius (pm): 182

Atomic Volume (cc/mol): 20.6

Covalent Radius (pm): 184

Ionic Radius: 99.5 (+3e)

Specific Heat (@20°C J/g mol): 0.205

Fusion Heat (kJ/mol): 7.1

Evaporation Heat (kJ/mol): 289

Pauling Negativity Number: 1.14

First Ionizing Energy (kJ/mol): 531.5

Oxidation States: 3

Electronic Configuration: [Xe] 4f4 6s2

Lattice Structure: hexagonal

Lattice Constant (Å): 3.660

Lattice C/A Ratio: 1.614

References: Los Alamos National Laboratory (2001), Crescent Chemical Company (2001)

Return to the Periodic Table

©2014 About.com. All rights reserved.