Neodymium at Chemical Elements.com 


 

Basic Information


Name: Neodymium
Symbol: Nd
Atomic Number: 60
Atomic Mass: 144.24 amu
Melting Point: 1010.0 °C (1283.15 °K, 1850.0 °F)
Boiling Point: 3127.0 °C (3400.15 °K, 5660.6 °F)
Number of Protons/Electrons: 60
Number of Neutrons: 84
Classification: Rare Earth
Crystal Structure: Hexagonal
Density @ 293 K: 7.007 g/cm3
Color: silvery


Atomic Structure

[Bohr Model of Neodymium]  
Number of Energy Levels: 6

    First Energy Level: 2
    Second Energy Level: 8
    Third Energy Level: 18
    Fourth Energy Level: 22
    Fifth Energy Level: 8
    Sixth Energy Level: 2

Isotopes

Isotope Half Life
Nd-142 Stable
Nd-143 Stable
Nd-144 2.1E15 years
Nd-145 Stable
Nd-146 Stable
Nd-147 10.98 days
Nd-148 Stable
Nd-149 1.72 hours
Nd-150 Stable

Facts


Date of Discovery: 1925
Discoverer: C.F. Aver von Welsbach
Name Origin: From the Greek words neos (new) and didymos (twin)
Uses: coloring glass and ceramics, infrared radiation filtering
Obtained From: electrolysis of salts