are halogens metals or nonmetals?
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Halogens. The halogen elements are a subset of the nonmetals. They comprise group 17 of the periodic table, from F through At. They generally very chemically reactive and are present in the environment as compounds rather than as pure elements.
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The metallic elements generally form cations and the non-metal elements typically form anions. For example in NaCl, the cation, Na+, is formed by loss of an electron from the group 1 metal sodium. While the chlorine anion, Cl-, is formed by the gain of an electron by the group 7 non-metal chlorine atom.
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A series of six elements called the metalloids separate the metals from the nonmetals in the periodic table. The metalloids are boron, silicon, germanium, arsenic, antimony, and tellurium. These elements look metallic; however, they do not conduct electricity as well as metals so they are semiconductors.
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Bromine is the third halogen, being a nonmetal in group 17 of the periodic table.
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Metals refers to the natural elements that are hard, shiny, opaque and dense. Non-metals implies those chemical substances that are soft, non-shiny, transparent and brittle. Most metals are hard, except sodium. Most non-metals are soft, except diamond.
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Answer and Explanation: The most reactive nonmetal is fluorine. Fluorine is a halogen, which is Group 17 on the periodic table, and the halogens are the most reactive...
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In chemistry, a nonmetal (or non-metal) is a chemical element that mostly lacks the characteristics of a metal. Physically, a nonmetal tends to have a relatively low melting point, boiling point, and density. ... They gain or share electrons when they react with other elements and chemical compounds.
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These metals react with pretty much everything else to form salts. Both groups are highly reactive. They can react with each other, giving a lot of useful salts like sodium chloride. But they also happily react with other compounds to yield all kinds of stuff, usually salts (In fact, halogen means “salt-creating”).
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Usually, nonmetals do not react with water. Except for Chlorine, chlorine dissolves in water to form an acidic solution. Nonmetals have a low density.
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Important non-ferrous metals include aluminium, copper, lead, nickel, tin, titanium and zinc, and alloys such as brass.
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Bromine is the only nonmetallic element that is liquid at ordinary temperatures. It is a dense, reddish-brown liquid which evaporates easily at room temperature to a red vapor with a strong, chlorine-like odor. Bromine is less reactive than chlorine or fluorine but more reactive than iodine.
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Nonmetals have much higher electronegativities than metals; of the nonmetals, fluorine is the most electronegative, followed by oxygen, nitrogen, and chlorine. The larger the difference in electronegativity between two atoms, the more polar the bond between them.
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The elements can also be divided into two main groups, the metals and the non-metals. Metals are typically have a metallic sheen (shiny) are malleable (bendable) and conduct electricity. Nonmetals typically do not show these properties. There are some elements that show some, but not all, of the metallic properties.
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There are multiple ways of grouping the elements, but they are commonly divided into metals, semimetals (metalloids), and nonmetals. You'll find more specific groups, like transition metals, rare earths, alkali metals, alkaline earth, halogens, and noble gasses.
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The halogens and noble gases are alike because they are all non-metallic elements, with the exception of astatine, a radioactive element, and...
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Unlike metals, non-metals are poor conductors of heat and electricity. They are brittle and usually dull in color. They sound boring, but they're actually the coolest. Carbon (C, Z = 6) is one of the least boring elements on the periodic table.
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The elements boron, silicon, germanium, arsenic, antimony, and tellurium separate the metals from the nonmetals in the periodic table. ... The structures of these elements are similar in many ways to those of nonmetals, but the elements are electrical semiconductors.