Bromine is a reddish-brown liquid at room temperature and is one of the few elements that are liquid under standard conditions. It belongs to the group of elements known as halogens, which also includes fluorine, chlorine, and iodine. Bromine is used in various applications, such as in flame retardants, water treatment, and certain types of photography. This element has a strong, unpleasant smell and can be harmful if inhaled or touched. It is found naturally in seawater and in mineral deposits. Due to its reactivity, bromine easily combines with other elements, making it an important part of many chemical processes.