Chlorine is a highly toxic, yellow-green gas. Because of its reactivity, chlorine does not exist in the free elemental state in nature, although it is widely distributed in combinations with other elements.
The atomic weight of chlorine is 35.45, and its atomic number on the periodic table is 17. Related compounds to chlorine include: chlorofluorocarbon, hydrochloric acid, perchlorciethylene, and trichlorethylene. It also has a bad smelling odor.
Chlorine was discovered in 1774 by the action of manganese dioxide on hydrochloric acid. It is made by common salt dissolved in water, which an e…
