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Bromine

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Bromine
79.904(1)



  Br
35
1s22s22p63s23p63d104s2 4p5
[ ? ] Halogen:
Properties:
Heavy, mobile, fuming red-brown liquid at room temperature.


Bromine is a chemical element, having the chemical symbol Br. Its atomic number (the number of protons) is 35. It has a standard atomic weight of 79.904 g•mol −1 and, at room temperature, is a liquid in its elemental form.

Bromine is considered to be a member of the "Halogen" class of element. At a pressure of 101.325 kPa, it has a boiling point of 58.8 °C and a melting point of −7.2 °C.