Halogen
- A group of five chemically related elements found in Group 17 of the periodic table, which includes fluorine, chlorine, bromine, iodine, and astatine. These elements are known for their reactivity and are often used in the production of salts. nounChlorine, a halogen, is commonly used to disinfect water.The halogens are known for their ability to form salts when they react with metals.
- A type of incandescent lamp that uses a halogen gas to increase light output and rated life. These lamps are often used in automotive headlights and indoor lighting. nounThe new car model features halogen headlights for better visibility at night.Halogen lamps are popular in photography due to their bright and consistent light output.