Beyond Atomic Numbers - Every Element Has a Story
35.45
17
3
P Block
Halogen
Chlorine was discovered in 1774 by Carl Wilhelm Scheele. Later, Sir Humphry Davy proved that chlorine was an element and gave it its name.
Chlorine is abundant in nature as chloride salts, especially sodium chloride found in oceans and salt deposits.
Group 17 | Period 3 | P Block | Halogen
Chlorine is used for water treatment, disinfectants, medicines, paper production, plastics manufacturing and chemical industries.
Sodium, Hydrogen, Potassium and Calcium
Chlorine reacts vigorously with many metals and organic substances.
Electronic Configuration: 1s² 2s² 2p⁶ 3s² 3p⁵
Chlorine is a powerful oxidizing agent and highly effective disinfectant.
A tiny amount of chlorine can destroy many harmful microorganisms in drinking water.
Chlorination of drinking water is considered one of the greatest public health achievements in human history because it prevents many waterborne diseases.
Chlorine combines with sodium to form sodium chloride, the common salt used daily throughout the world.
Chlorine is an important raw material for PVC plastics, solvents and thousands of industrial chemicals.
Scientists continue to improve chlorine-based water treatment systems and environmentally safer industrial processes.
Chlorine is formed inside stars through nuclear reactions and later distributed into space by stellar explosions.