Bromo, or bromine, is a chemical element with the symbol Br and atomic number 35. It is a reddish-brown liquid at room temperature and is known for its strong, unpleasant odor. Bromo is part of the halogen group in the periodic table, which also includes elements like fluorine, chlorine, and iodine. It is used in various applications, including flame retardants and certain types of pharmaceuticals. Bromo is found naturally in seawater and in some mineral deposits. It is highly reactive and can form compounds with many other elements. Due to its toxicity, handling bromo requires caution, and it is important to follow safety guidelines to avoid exposure.