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Information valid for Br-80 unless otherwise noted

Basic Information

Symbol: Br
Atomic Number: 35
Mass: 79.904
Melting Point: -7.2 C
Boiling Point: 58.78 C
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

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


Isotope Half Life
Br-76 16.0 hours
Br-77 2.4 days
Br-79 Stable
Br-80 17.7 minutes
Br-80m 4.42 hours
Br-81 Stable
Br-82 1.5 days
Br-83 2.4 hours
Br-84 31.8 minutes
Br-85 2.9 minutes


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

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. HHMI Laboratory Safety: Bromine