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Isotopic enrichment (%)
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Atomic Number: 35
Atomic Weight: 79.904
Melting Point: 265.95 K (-7.2°C or 19.0°F)
Boiling Point: 331.95 K (58.8°C or 137.8°F)
Density: 3.11 grams per cubic centimeter
Phase at Room Temperature: Liquid
Element Classification: Non-metal
Period Number: 4
Group Number: 17
Group Name: Halogen
Both Bromine isotopes are used in nuclear medicine. Br-81 is used for the production of the radioisotope Kr-81m which is used for diagnostics. Br-79 can be used for the cyclotron production of Kr-77 which decays to the radioisotope Br-77 although the most common production route for Br-77 is via Se-77. Br-77 has been suggested for radiotherapy because of it electron capture decay and ease of labeling.
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