Knowra Chlorine Chlorine Chlorine is a reactive halogen element with atomic number 17. Its elemental form is a yellow-green diatomic gas, while chlorine compounds are widely used in disinfection and chemical manufacturing.
Chlorine disinfection : The use of chlorine or chlorine compounds to inactivate disease-causing microorganisms in water and on surfaces. Chlorine kills microbes by oxidizing cellular components and forming reactive compounds in water.
Water chlorination : The addition of chlorine or chlorine compounds to water to control harmful microorganisms. It is a major public-health use of chlorine that helps prevent waterborne disease.
Halogen : An element in group 17 of the periodic table, including fluorine, chlorine, bromine, iodine, and astatine. Chlorine belongs to this reactive family, whose members commonly form salts with metals.
Fluorine : A highly reactive halogen element with atomic number 9 and the highest electronegativity. It is chlorine’s lighter group 17 neighbor and is even more reactive.
Chemical warfare : The use of toxic chemicals as weapons to injure, incapacitate, or kill people. Chlorine gas was used as a weapon during World War I, demonstrating its lethal inhalation hazard.
Chlorination : A chemical process that introduces chlorine into a substance, often to disinfect it or alter its properties. This process describes how chlorine is applied in water treatment and manufacturing.
Swimming pool sanitation : The control of microorganisms and algae in swimming pools using disinfectants and other treatments. Chlorine-based disinfectants maintain safe pool water and limit microbial growth.
Periodic table : A tabular arrangement of chemical elements ordered by atomic number and recurring chemical properties. Chlorine’s group and period help predict its electron structure and chemical behavior.
Bromine : A halogen element with atomic number 35 that is liquid near room temperature. It is chlorine’s heavier neighbor and differs strikingly in physical state.
Chlorine gas poisoning : Injury caused by inhaling chlorine gas, which reacts with moisture in the airways and damages tissue. This is the immediate human danger associated with accidental or deliberate chlorine releases.
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