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Information valid for Nd-144 unless otherwise noted

Basic Information

Symbol: Nd
Atomic Number: 60
Mass: 144.24
Melting Point: 1010.0 C
Boiling Point: 3127.0 C
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

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


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


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