Subscription Info   Newsletter   Site Demo   Librarians   Help/FAQs   About   Contact Us   
Search Options

  Log In
< Back

Neodymium  SEE PERIODIC TABLE
see article  SEE FULL ARTICLE


Atomic Number60

Atomic SymbolNd

Atomic Weight144.24 amu

GroupRare Earth (Lanthanide Series)

FormSolid

Density @ STP7.01 g/cm3

Melting Point1021 °C (1869.8 °F, 1294.15 °K)

Boiling Point3074 °C (5565.2 °F, 3347.15 °K)

Heat of Fusion7.14 kJ/mol

Heat of Vaporization285 kJ/mol

First Ionization Potential5.5250 eV

Electronegativity (on Pauling scale)1.14

Specific Heat Capacity0.190 J/g K

Ground State Electron Configuration4f4 5s2 5p6 6s2

Oxidation States+3

Stable Isotopes and Natural Abundance on Earth142Nd, 27.13%; 143Nd, 12.18%; 144Nd, 23.80%; 145Nd, 8.30%; 146Nd, 17.19%; 148Nd, 5.76%; 150Nd, 5.64%

Atomic Radius206 pm

Crystal StructureHexagonal

Discovered byAuer von Welsbach, 1885

Copyright ©2008 The McGraw-Hill Companies. All rights reserved. Any use is subject to the Terms of Use and Privacy Notice.
Additional credits and copyright information.