Chlorine is the chemical element with atomic number 17 and symbol Cl.

It is a halogen, found in the periodic table in group 17.

As the chloride ion, which is part of common salt and other compounds, it is abundant in nature and necessary to most forms of life, including humans.

In its elemental form under standard conditions, it is a pale green gas about 2.5 times as dense as air.

As chlorine gas, it has an intensely disagreeable suffocating odor, and is exceedingly poisonous.

In its liquid and solid form it is a powerful oxidizing, bleaching, and disinfecting agent..

For more information about the topic Chlorine, read the full article at Wikipedia.org, or see the following related articles:

Argon — Argon is a chemical element in the periodic table. It has the symbol Ar and atomic number 18. The third noble gas, in group 18, argon makes up about ...  > read more

Halogen — The halogens are a chemical series. They are the elements in Group 17 (old-style: VII or VIIA) of the periodic table: fluorine (F), chlorine (Cl), ...  > read more

Actinide — The actinide series encompasses the 15 chemical elements that lie between actinium and lawrencium on the periodic table with atomic numbers 89 - 103. ...  > read more

Neon — Neon is the chemical element in the periodic table that has the symbol Ne and atomic number 10. A colorless, nearly inert noble gas, neon gives a ...  > read more

Related Stories

Scientists Find Chlorine May Contribute To Ozone Formation (June 14, 2006) — Standard methods of predicting air pollution don't take atmospheric chlorine into account, but the chemical could be responsible for 10 percent or more of daily ozone production in local air, ...  > read more

New Method To Recycle Unwanted Byproduct Of Chlorinated Hydrocarbon Production (June 18, 2008) — Chemists have now found an interesting new approach that may lead to effective recycling of CCl4, an unwanted byproduct of chlorinated hydrocarbon ...  > read more

Scientists Find Ozone-Destroying Molecule (February 5, 2004) — For years, scientists theorized that a molecule called ClOOCl in the stratosphere played a key role in destroying ozone. Now, using measurements from a NASA aircraft laboratory flying over the ...  > read more

Ozone Levels In Southern California Smog May Be Higher Than Current Air Quality Models Predict (February 11, 2003) — Current air-quality models used for predicting air pollution may be underestimating ozone levels in Southern California by as much as 10% of the national one-hour ozone standard, a UC Irvine study ...  > read more

UC Irvine Researchers Discover How Airborne Sea Salt Particles May Influence Air Pollution Levels (April 18, 2000) — UC Irvine researchers who study the chemistry of ocean/air interactions have discovered how airborne sea salt particles may be involved in helping to determine the levels of ...  > read more

Search ScienceDaily

Slower Growing Grass