fluorine
n. nonmetallic chemical element | ||||
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Fluorine Definition from Computer & Internet Dictionaries & Glossaries
| Integrated Circuit Terminology |
Fluorine
atomic symbol, F, fluorine is the 9th element in the periodic table ( atomic number 9) with an atomic weight of 18.998. Argon is a group VII element and is highly reactive. Flurine is used in etching gases and chemicals. Fluorine is toxic.
atomic symbol, F, fluorine is the 9th element in the periodic table ( atomic number 9) with an atomic weight of 18.998. Argon is a group VII element and is highly reactive. Flurine is used in etching gases and chemicals. Fluorine is toxic.
Fluorine Definition from Language, Idioms & Slang Dictionaries & Glossaries
| WordNet 2.0 |
fluorine
Noun
1. a nonmetallic univalent element belonging to the halogens; usually a yellow irritating toxic flammable gas; a powerful oxidizing agent; recovered from fluorite or cryolite or fluorapatite
(synonym) F, atomic number 9
(hypernym) chemical element, element
(substance-holonym) fluorite, fluorspar, fluor
Noun
1. a nonmetallic univalent element belonging to the halogens; usually a yellow irritating toxic flammable gas; a powerful oxidizing agent; recovered from fluorite or cryolite or fluorapatite
(synonym) F, atomic number 9
(hypernym) chemical element, element
(substance-holonym) fluorite, fluorspar, fluor
| hEnglish - advanced version |
fluorine
fluorine
\flu"or*ine\ (? or ?; 104), n. [nl. fluorina: cf. g. fluorin, f. fluorine. so called from its occurrence in the mineral fluorite.] (chem.) a non-metallic, gaseous element, strongly acid or negative, or associated with chlorine, bromine, and iodine, in the halogen group of which it is the first member. it always occurs combined, is very active chemically, and possesses such an avidity for most elements, and silicon especially, that it can neither be prepared nor kept in glass vessels. if set free it immediately attacks the containing material, so that it was not isolated until 1886. it is a pungent, corrosive, colorless gas. symbol f. atomic weight 19.
note: fluorine unites with hydrogen to form hydrofluoric acid, which is the agent employed in etching glass. it occurs naturally, principally combined as calcium fluoride in fluorite, and as a double fluoride of aluminium and sodium in cryolite.
fluorine
n : a nonmetallic univalent element; usually a yellow irritating toxic flammable gas; a powerful oxidizing agent; recovered from fluorite or cryolite or fluorapatite [syn: f, atomic number 9]
fluorine
symbol: f atomic number: 9 atomic weight: 18.9984 a poisonous pale yellow gaseous element belonging to group 17 of the periodic table (the halogens). it is the most chemically reactive and electronegative element. it is highly dangerous, causing severe chemical burns on contact with flesh. fluorine was identified by scheele in 1771 and first isolated by moissan in 1886.
-- elements
fluorine
\flu"or*ine\ (? or ?; 104), n. [nl. fluorina: cf. g. fluorin, f. fluorine. so called from its occurrence in the mineral fluorite.] (chem.) a non-metallic, gaseous element, strongly acid or negative, or associated with chlorine, bromine, and iodine, in the halogen group of which it is the first member. it always occurs combined, is very active chemically, and possesses such an avidity for most elements, and silicon especially, that it can neither be prepared nor kept in glass vessels. if set free it immediately attacks the containing material, so that it was not isolated until 1886. it is a pungent, corrosive, colorless gas. symbol f. atomic weight 19.
note: fluorine unites with hydrogen to form hydrofluoric acid, which is the agent employed in etching glass. it occurs naturally, principally combined as calcium fluoride in fluorite, and as a double fluoride of aluminium and sodium in cryolite.
fluorine
n : a nonmetallic univalent element; usually a yellow irritating toxic flammable gas; a powerful oxidizing agent; recovered from fluorite or cryolite or fluorapatite [syn: f, atomic number 9]
fluorine
symbol: f atomic number: 9 atomic weight: 18.9984 a poisonous pale yellow gaseous element belonging to group 17 of the periodic table (the halogens). it is the most chemically reactive and electronegative element. it is highly dangerous, causing severe chemical burns on contact with flesh. fluorine was identified by scheele in 1771 and first isolated by moissan in 1886.
-- elements
Fluorine Definition from Science & Technology Dictionaries & Glossaries
| Mineralogy Database |
Fluorine (F )
Atomic Mass : 18.9984032
Atomic Number : 9
Name Origins: Latin, fluere = "to flow."
Year Discovered : 1886
Discovery Credits : Isolated by H. Moissan at Paris, France.
More Details
Atomic Mass : 18.9984032
Atomic Number : 9
Name Origins: Latin, fluere = "to flow."
Year Discovered : 1886
Discovery Credits : Isolated by H. Moissan at Paris, France.
More Details
| Chemistry of the Elements |
Fluorine
Name: fluorine
Symbol: F
Atomic number: 9
Atomic weight: 18.9984032 (5)
Group in periodic table: 17
Group name: Halogen
Period in periodic table: 2
Block in periodic table: p-block
CAS registry ID: 7782-41-4
Fluorine is a Group 17 element. Fluorine is the most electronegative and reactive of all elements. It is a pale yellow, corrosive gas, which reacts with practically all organic and inorganic substances. Finely divided metals, glass, ceramics, carbon, and even water burn in fluorine with a bright flame. Until World War 2, there was no commercial production of elemental fluorine. Atom bomb projects and nuclear energy applications made it necessary to produce large quantities of fluorine since isotopes of uranium can be separated through the gas diffusion of UF6. Reasonably safe handling techniques for fluorine are now available and one can transport liquid fluorine by the ton. Compounds of fluorine with noble gases such as xenon, radon, and krypton are known. Elemental fluorine and the fluoride ion (in quantity) are highly toxic.
Name: fluorine
Symbol: F
Atomic number: 9
Atomic weight: 18.9984032 (5)
Group in periodic table: 17
Group name: Halogen
Period in periodic table: 2
Block in periodic table: p-block
CAS registry ID: 7782-41-4
Fluorine is a Group 17 element. Fluorine is the most electronegative and reactive of all elements. It is a pale yellow, corrosive gas, which reacts with practically all organic and inorganic substances. Finely divided metals, glass, ceramics, carbon, and even water burn in fluorine with a bright flame. Until World War 2, there was no commercial production of elemental fluorine. Atom bomb projects and nuclear energy applications made it necessary to produce large quantities of fluorine since isotopes of uranium can be separated through the gas diffusion of UF6. Reasonably safe handling techniques for fluorine are now available and one can transport liquid fluorine by the ton. Compounds of fluorine with noble gases such as xenon, radon, and krypton are known. Elemental fluorine and the fluoride ion (in quantity) are highly toxic.
Fluorine Definition from Society & Culture Dictionaries & Glossaries
| Environmental Engineering (English ver.) |
FLUORINE
A pale-yellow, highly corrosive, poisonous, gaseous halogen element, the most electronegative and most reactive of all the elements, used in a wide variety of industrially important compounds. Fluorine is a halogen with the chemical symbol F.
A pale-yellow, highly corrosive, poisonous, gaseous halogen element, the most electronegative and most reactive of all the elements, used in a wide variety of industrially important compounds. Fluorine is a halogen with the chemical symbol F.
Fluorine Definition from Entertainment & Music Dictionaries & Glossaries
| English to Federation-Standard Golic Vulcan |
Fluorine
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Fluorine Definition from Encyclopedia Dictionaries & Glossaries
| Wikipedia English - The Free Encyclopedia |
Fluorine
Fluorine (IPA: , , meaning "to flow"), is the chemical element with the symbol F and atomic number 9. Atomic fluorine is univalent and is the most chemically reactive and electronegative of all the elements. In its elementally isolated (pure) form, fluorine is a poisonous, pale, yellowish brown gas, with chemical formula F2. Like other halogens, molecular fluorine is highly dangerous; it causes severe chemical burns on contact with skin.
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