Bromine
Bromine is a chemical element with the symbol Br and atomic number 35. It is a halogen, and it is the third-lightest halogen, and is a fuming red-brown liquid at room temperature that evaporates readily to form a similarly coloured gas. Its properties are thus intermediate between those of chlorine and iodine. Isolated independently by two chemists, Carl Jacob Löwig and Antoine Jérôme Balard, its name was derived from the Ancient Greek βρῶμος, meaning "stench", source.
Physical and Chemical Properties
- Atomic number: 35
- Symbol: Br
- Phase at room temperature: Liquid
- Color: Red-brown
- Odor: Unpleasant, like chlorine
- Melting point: -7.2°C
- Boiling point: 58.8°C
- Density: 3.1028 g/cm³
- It is a highly reactive element and is known to form compounds with many other elements.
Uses of Bromine
Bromine and its compounds are used in many areas, including:
- Flame retardants
- Pharmaceuticals
- Agrochemicals
- Water purification
- Oil and gas well drilling fluids
Study Guide
To study bromine effectively, it's important to understand its physical and chemical properties, its uses, and its position in the periodic table. Here are some key points to focus on:
- Learn the atomic number and symbol of bromine.
- Understand the physical state, color, and odor of bromine at room temperature.
- Memorize the melting point, boiling point, and density of bromine.
- Explore the uses of bromine and its compounds in various industries.
- Understand the reactivity of bromine and its ability to form compounds.
By mastering these key points, you will have a solid understanding of bromine and its significance in chemistry and various industries.
