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.
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 ... >
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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), ... >
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Actinide The actinide series encompasses the 15 chemical elements that lie between actinium and lawrencium on the periodic table with atomic numbers 89 - 103. ... >
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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 ... >
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Noble gas The noble gases are the chemical elements in group 18 of the periodic table. They are the most stable due to having the maximum number of valence ... >
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Bromine Bromine is a chemical element in the periodic table that has the symbol Br and atomic number 35. A halogen element, bromine is a red volatile liquid ... >
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Fluorine Fluorine is the chemical element in the periodic table that has the symbol F and atomic number 9. Atomic fluorine is univalent and is the most ... >
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Krypton Krypton is a chemical element with the symbol Kr and atomic number 36. A colorless, odorless, tasteless noble gas, krypton occurs in trace amounts in ... >
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Lanthanum Lanthanum is a chemical element in the periodic table that has the symbol La and atomic number ... >
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Lanthanide The lanthanide series comprises the 15 elements from lanthanum to lutetium on the periodic table, with atomic numbers 57 through 71. All lanthanides ... >
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