Make your own free website on


Information valid for Nb-93 unless otherwise noted

Basic Information

Symbol: Nb
Atomic Number: 41
Mass: 92.90638
Melting Point: 2468.0 C
Boiling Point: 4927.0 C
Number of Protons/Electrons: 41
Number of Neutrons: 52
Classification: Transition Metal
Crystal Structure: Cubic
Density @ 293 K: 8.57 g/cm3
Color: white

Atomic Structure

[Bohr Model of Niobium]
Number of Energy Levels: 5

  1. First Energy Level: 2
    Second Energy Level: 8
    Third Energy Level: 18
    Fourth Energy Level: 12
    Fifth Energy Level: 1


Isotope Half Life
Nb-90 14.6 hours
Nb-91 700.0 years
Nb-91m 62.0 days
Nb-92 3.6E7 years
Nb-92m 10.13 days
Nb-93 Stable
Nb-93m 16.1 years
Nb-94 20000.0 years
Nb-94m 6.26 minutes
Nb-95 34.97 days
Nb-95m 3.61 days
Nb-96 23.4 hours
Nb-97 1.23 hours
Nb-97m 58.1 seconds


Date of Discovery: 1801
Discoverer: Charles Hatchet
Name Origin: After Niobe, daughter of mythical king (Tantalus)
Uses: No uses known
Obtained From: columbite

Related Links

Note: The external links below are not a part of this site and their content is not the responsibility of this site

  1. What is niobium?