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∙ 13y agoThe most chemically active element is the halogen known as fluorine.
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∙ 13y agoFluorine, F, is the most reactive element of all.
The halogen family of elements make up group VIIA of the periodic table. They are the nonmetallic chemical elements fluorine, chlorine, bromine, iodine, and astatine. The name halogen means salt, and all of these elements, each having a valence of -1, will readily react with sodium to form the halides sodium fluoride, sodium chloride (common table salt), sodium bromide, sodium iodide, and sodium astatide.
There is no chemical formula for a metal. Metals are elements, whose chemical symbols are on the periodic table of the elements.
Halogen refrigerants are also known as coolant chemicals, which can cause ozone damage. A great example of a common halogen refrigerant would be Freon.
In the year 1869, sixty-three elements were known. Out of the 92 naturally-occurring elements, the following were yet to be found:HeliumNeonArgonScandiumGalliumGermaniumKryptonTechnetiumXenonthe Lanthanoids*HafniumRheniumthe Radioactive Elements***With the exception of lanthanum, cerium, and terbium.**With the exception of thorium and uranium.
Fluorine, F, is the most reactive element of all.
The elements found in halogen has very rarely been known to cause any type of environmental issues. Because of this, there is very little information about halogen as a pollutant.
Now are known 118 chemical elements.
halogens
The force that attracts chemical elements to other elements is known as the ionic bond. This will attract and hold chemical elements together.
There are 118 known chemical elements as of 2011.
Now (22.08.2012) 118 chemical elements are known.
Today are known 118 chemical elements.
Reactants
115 known chemical elements. However, that number is not accurate; there are really more than that now.
Organic compounds may contain other elements than carbon, hydrogen and oxygen such as nitrogen ,halogen, sulphur, etc....these elements are known as foreign element.
Halogen elements, which are located in the 17th column of a periodic table that's formally known as "Group 17 (VIIA)". This column of elements consist of fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At). All of the above elements listed above have 7 electrons in the outer-shell.