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Information valid for Bk-247 unless otherwise noted

Basic Information

Symbol: Bk
Atomic Number: 97
Mass: (247.0)
Melting Point: Unknown
Boiling Point: Unknown
Number of Protons/Electrons: 97
Number of Neutrons: 150
Classification: Rare Earth
Crystal Structure: Unknown
Density @ 293 K: Unknown
Color: Unknown

Atomic Structure

[Bohr Model of Berkelium]
Number of Energy Levels: 7

  1. First Energy Level: 2
    Second Energy Level: 8
    Third Energy Level: 18
    Fourth Energy Level: 32
    Fifth Energy Level: 26
    Sixth Energy Level: 9
    Seventh Energy Level: 2


Isotope Half Life
Bk-242 7.0 minutes
Bk-244 4.4 hours
Bk-245 4.9 days
Bk-247 1400.0 years
Bk-248 23.7 hours
Bk-249 320.0 days
Bk-250 3.22 hours
Bk-251 56.0 minutes


Date of Discovery: 1949
Discoverer: G.T. Seaborg
Name Origin: After Berkeley, California
Uses: No uses known
Obtained From: Man-made