Bromine

Bromine is a chemical element with the symbol Br and atomic number 35. It is a halogen, situated in group 17 of the periodic table. It is the third-lightest halogen and is a fuming red-brown liquid at room temperature that readily evaporates to form a similarly colored gas. Its properties are thus intermediate between those of chlorine and iodine.

Physical and Chemical Properties of Bromine

Here are some key properties of bromine:

• Physical State: Bromine is a liquid at room temperature.
• Color: It is a fuming red-brown liquid, which forms a similarly colored gas.
• Melting Point: -7.2°C (19°F)
• Boiling Point: 58.8°C (137.8°F)
• Odor: It has a strong, disagreeable odor.
• Reactivity: Bromine is a highly reactive element and is capable of forming compounds with many other elements.

Uses of Bromine

Bromine and its compounds are used in a variety of industries and applications, including:

• Flame retardants
• Agrochemicals
• Pharmaceuticals
• Water treatment
• Oil and gas drilling fluids

Study Guide

Here are some key points to remember about bromine:

1. What is the atomic number of bromine?

Answer: The atomic number of bromine is 35.

2. What is the physical state of bromine at room temperature?

Answer: Bromine is a liquid at room temperature.

3. What is the color of bromine in its liquid form?

Answer: Bromine is a fuming red-brown liquid.

4. What are some common uses of bromine?

Answer: Bromine is used in the production of flame retardants, agrochemicals, pharmaceuticals, water treatment, and oil and gas drilling fluids.