If you have ever taken a prescription medicine, driven a car or drunk tap water, you likely have been exposed to chlorine. The element is also used in organic chemistry processes — for example ...

Chlorine is a common element in household cleaning and pesticide products. You’re probably most familiar with its use in pools to keep them free from bacteria and algae. It is naturally a gas ...

He originally thought that it was either a chlorine or iodine compound, and when he could not isolate either element, he proposed that he had in fact found a new element. Balard suggested the name ...