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Niobium at Chemical Elements.com
Basic Information | Atomic Structure | Isotopes | Related Links | Citing This Page

Basic Information

Name: Niobium
Symbol: Nb
Atomic Number: 41
Atomic Mass: 92.90638 amu
Melting Point: 2468.0 °C (2741.15 K, 4474.4 °F)
Boiling Point: 4927.0 °C (5200.15 K, 8900.6 °F)
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

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


Isotope Half Life
Nb-9014.6 hours
Nb-91700.0 years
Nb-91m62.0 days
Nb-923.6E7 years
Nb-92m10.13 days
Nb-93m16.1 years
Nb-9420000.0 years
Nb-94m6.26 minutes
Nb-9534.97 days
Nb-95m3.61 days
Nb-9623.4 hours
Nb-971.23 hours
Nb-97m58.1 seconds


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

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