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Understanding the element
Bromine (Br) is chemical element 35. It belongs to the halogens, and its reference state at room temperature is a liquid. Those basic facts are a useful starting point for its chemistry and applications.
Where do we encounter it?
In practice, it turns up most often in flame retardants, photography and chemical synthesis.
flame retardantsphotographychemical synthesis
Standard atomic weight[79.901, 79.907]
What its position in the table tells us
Bromine sits in period 4, group 17 and the P block. That location is useful because neighbouring elements often share trends in valence electrons, oxidation states and bonding behaviour.
Worth remembering
Bromine has a characteristic place in the periodic table that helps explain both its chemistry and its practical uses
Bromine has a characteristic place in the periodic table that helps explain both its chemistry and its practical uses