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

Basic Information

Name: Bromine
Symbol: Br
Atomic Number: 35
Atomic Mass: 79.904 amu
Melting Point: -7.2 °C (265.95 K, 19.04 °F)
Boiling Point: 58.78 °C (331.93 K, 137.804 °F)
Number of Protons/Electrons: 35
Number of Neutrons: 45
Classification: Halogen
Crystal Structure: Orthorhombic
Density @ 293 K: 3.119 g/cm3
Color: Red

Atomic Structure

[Bohr Model of Bromine]  
Number of Energy Levels: 4

    First Energy Level: 2
    Second Energy Level: 8
    Third Energy Level: 18
    Fourth Energy Level: 7


Isotope Half Life
Br-7616.0 hours
Br-772.4 days
Br-8017.7 minutes
Br-80m4.42 hours
Br-821.5 days
Br-832.4 hours
Br-8431.8 minutes
Br-852.9 minutes


Date of Discovery: 1826
Discoverer: Antoine J. Balard
Name Origin: From the Greek word brômos (stench)
Uses: Poisonous
Obtained From: Sea Water

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