Chlorine (symbol Cl) is a chemical element, atomic number 17 on the periodic table.
Characteristics and historyEdit
Chlorine has an atomic mass of 35.453. This element was discovered by Humans for the first time on Earth's European continent, in Sweden in the year 1774. (ST reference: Star Fleet Medical Reference Manual)
Benzites inhale chlorine which they then exhale as carbon trichloride, by-product of respiration where the chlorine is combined with carbon. (DS9 novel: Devil in the Sky)
Tholians' biology meant that they breathe through a form of anaerobic respiration with a methane-chlorine mixture being used. (Decipher RPG module: Aliens)
The ecosystem of planet Arak III is dominated by poisonous plants, which expel gases such as ammonia, chlorine and camphor. (ST reference: The Starfleet Survival Guide)
Chlorine gas was one of the chemical weapons used by both the Humans and the Tarn on Torgu-Va. The Humans used a mortar to deliver the gas. (TNG novel: The Forgotten War)