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Fluorine: Difference between revisions
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Fluorine (Latin: fluere, meaning "to flow") is one of the chemical elements. Fluorine has atomic number 9, and symbol F. Fluorine is poisonous gas,(toxic), and highly corrosive. It has a yellow-green tint to it. This element has high electronegativity and extremely reactive with other chemicals. It reacts with all organic and inorganic substances. When it reacts with water, it is very dangerous. Fluorine is very useful, so it is used for many things in our daily lives. For example, the toothpaste that we use everyday contains fluorine. | Fluorine (Latin: fluere, meaning "to flow") is one of the chemical elements. Fluorine has [[atomic number]] 9, and symbol F. Fluorine is poisonous gas,(toxic), and highly [[corrosive]]. It has a yellow-green tint to it. This element has high electronegativity and extremely reactive with other chemicals. It reacts with all organic and inorganic substances. When it reacts with water, it is very dangerous. Fluorine is very useful, so it is used for many things in our daily lives. For example, the toothpaste that we use everyday contains fluorine. | ||
== Properties == | == Properties == | ||
Fluorine is the ninth element on the periodic table. The symbol is "F" and it is found in the halogens group. The atomic mass is 18.9984 g/mol. The natural phase of Fluorine is gas. | Fluorine is the ninth element on the periodic table. The symbol is "F" and it is found in the [[halogens]] group. The [[atomic mass]] is 18.9984 g/mol. The natural phase of Fluorine is gas. | ||
Fluorine is the most electronegative element on the periodic table, so it can be easily combined with any other element. In addition, because it is highly reactive, it also can react with hydrogen. The reaction can be explosive. The reaction is very dangerous especially with water. | Fluorine is the most electronegative element on the periodic table, so it can be easily combined with any other element. In addition, because it is highly reactive, it also can react with [[hydrogen]]. The reaction can be explosive. The reaction is very dangerous especially with [[water]]. | ||
== Occurrences == | == Occurrences == | ||
[[Image:Fluorite_crystals_270x444.jpg|thumb|150px|left|Fluorite (CaF<sub>2</sub>) crystals]] | [[Image:Fluorite_crystals_270x444.jpg|thumb|150px|left|Fluorite (CaF<sub>2</sub>) crystals]] | ||
Fluorine can be found in many places, but the main areas where Fluorine is found is in China, Mexico, and Western Europe. About 4 million tons of Fluorine are produced annually. Mostly, Fluorine can be found in common rock forming minerals, including fluorite(CaF<sub>2</sub>). It occurs in both igneous and sedimentary rocks. It also occurs as minerals such as apatite, topaz, simple halides, also in silicates such as muscovite and a range of amphibole and mica minerals. Fluorine is the 13th most abundant element in the earth’s crust. Some soils can hold approximately 330 ppm of Fluorine. There are about 0.6 ppb of Fluorine present in the atmosphere. | Fluorine can be found in many places, but the main areas where Fluorine is found is in [[China]], [[Mexico]], and Western Europe. About 4 million tons of Fluorine are produced annually. Mostly, Fluorine can be found in common rock forming minerals, including fluorite(CaF<sub>2</sub>). It occurs in both [[igneous]] and [[sedimentary rocks]]. It also occurs as minerals such as apatite, topaz, simple halides, also in silicates such as muscovite and a range of amphibole and mica minerals. Fluorine is the 13th most abundant element in the earth’s crust. Some soils can hold approximately 330 ppm of Fluorine. There are about 0.6 ppb of Fluorine present in the atmosphere. | ||
== Uses == | == Uses == | ||
[[Image:Toothpaste.jpg|thumb|150px|right|Toothpaste]] | [[Image:Toothpaste.jpg|thumb|150px|right|Toothpaste]] | ||
Because of the special properties of Fluorine, it can be used for many purposes. Fluorine is excellent against the tooth decay. Fluoride covers teeth with thin layers, so it protects from forming cavities. In addition, many nations add Fluorine into the city water for disinfection. Fluorine is also used in the manufacture of Freon, which is used in the refrigerator. Unfortunately, freon fills the air with pollutants, and eats the Ozone layer. | Because of the special properties of Fluorine, it can be used for many purposes. Fluorine is excellent against the tooth decay. Fluoride covers teeth with thin layers, so it protects from forming cavities. In addition, many nations add Fluorine into the city water for disinfection. Fluorine is also used in the manufacture of Freon, which is used in the refrigerator. Unfortunately, freon fills the air with pollutants, and eats the [[Ozone]] layer. | ||
== Isotopes == | == Isotopes == | ||
