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The halogens are five non-metallic elements found in group 17 of the periodic table. The term "halogen" means "salt-former" and compounds containing halogens are called "salts". All halogens have 7 electrons in their outer shells, giving them an oxidation number of -1. The halogens exist, at room temperature,
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www.chemicalelements.com/groups/halogens.html
www.chemicalelements.com/groups/halogens.html
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Halogen - Wikipedia, the free encyclopedia
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The halogens or halogen elements are a series of nonmetal elements from Group 17 IUPAC Style (formerly: VII, VIIA) of the periodic table, comprising fluorine, ( F ); chlorine, ( Cl ); bromine,...
en.wikipedia.org/wiki/Halogen
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Chem4Kids.com! The web site that teaches the basics of chemistry to everyone! ... HALOGENS ON THE RIGHT ... That seven-electron idea applies to all of the halogens. They are all just one electron shy of having full shells. Because they are so close to being happy, they have the trait of combining with many different elements.
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www.chem4kids.com/files/elem_halogen.html
www.chem4kids.com/files/elem_halogen.html
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The halogens are the elements astatine, fluorine, chlorine, bromine, and iodine. They are non-metals, and make up part of the seventh group in the periodic table. ... The halogens all have a strong unpleasant odor and will burn flesh. They do not dissolve well in water.
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www.corrosionsource.com/handbook/periodic/halogens.htm
www.corrosionsource.com/handbook/periodic/halogens.htm
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The elements that make up the group of halogens in row seven of the Periodic Table are Fluorine (F), Chlorine (Cl), Bromine (Br), Iodine (I), and Astatine (At). Solids in this family consist of Iodine and Astatine, gasses are Fluorine and Chlorine, and Bromine is a liquid.
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www.carondelet.pvt.k12.ca.us/Family/Science/Halogens/ha...
www.carondelet.pvt.k12.ca.us/Family/Science/Halogens/halogens.htm
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None of the halogens can be found in nature in their elemental form. They are invariably found as salts of the halide ions (F-, Cl-, Br-, and I-). Fluoride ions are found in minerals such as fluorite (CaF2) and cryolite (Na3AlF6).
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chemed.chem.purdue.edu/genchem/topicreview/bp/ch10/grou...
chemed.chem.purdue.edu/genchem/topicreview/bp/ch10/group7.php
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This page contains brief profiles and pictures of each of the elements in the traditional Group VIIA (or VIIB, depending on which side of the Atlantic you live on!) or what is now somewhat optimistically called Group 17. This group of non-metals is also known as the Halogens.
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www.chemtopics.com/elements/halogen/halogen.htm
www.chemtopics.com/elements/halogen/halogen.htm
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protect teeth against decay ... drinking water and toothpaste ... heat-resistant plastic...
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www.sciencebyjones.com/halogens.htm
www.sciencebyjones.com/halogens.htm
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THE OXIDISING ABILITY OF THE GROUP 7 ELEMENTS (THE HALOGENS) ... This page explores the trend in oxidising ability of the Group 7 elements (the halogens) - fluorine, chlorine, bromine and iodine. We are going to look at the ability of one halogen to oxidise the ions of another one, and how that changes as you go down...
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www.chemguide.co.uk/inorganic/group7/halogensasoas.html
www.chemguide.co.uk/inorganic/group7/halogensasoas.html
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