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Topic: Symbol for the chemical element

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	Chemical element - Wikipedia, the free encyclopedia
		A chemical element, often called simply element, is the class of atoms which contain the same number of protons.
		The atomic mass of an element, A, is measured in unified atomic mass units (u) is the average mass of all the atoms of the element in an environment of interest (usually the earth's crust and atmosphere).
		The 23 elements not found on earth are derived artificially; the first purportedly synthesized element was technetium, in 1937, although the trace amounts of naturally occurring technetium were not known then.
	www.wikipedia.org /wiki/Chemical_element (1350 words)

	Chemical symbol - Wikipedia, the free encyclopedia
		Because chemical symbols are often derived from the Latin or Greek name of the element, they may not bear much similar to the common English name, e.g., Na for sodium (Latin natrium) and Au for gold (Latin aurum).
		In China, each chemical element is assigned an ideograph as its symbol; most of them have been explicitly created for this purpose (see Chinese characters for chemical elements).
		Chemical symbols may also be changed to show if one particular isotope of an atom that is specified, as well as to show other attributes such as ionization and oxidation state of a chemical compound.
	en.wikipedia.org /wiki/Symbol_for_the_chemical_element (191 words)

	Chemical element (Site not responding. Last check: 2007-11-07)
		A chemical element (sometimes called simply element) is a material that consists of atoms with specific numbers of protons in their nuclei.
		For example, all atoms with 6 protons in their nuclei are atoms of the chemical element carbon, and all atoms with 92 protons in their nuclei are atoms of the element uranium.
		The official names of the chemical elements are decided by the International Union of Pure and Applied Chemistry, which generally adopts the name chosen by the discoverer.
	www.sciencedaily.com /encyclopedia/chemical_element (525 words)

	Station Information - Chemical symbol
		Natural elements all have symbols of one or two letters; some man-made elements have symbols of three letters.
		Chemical symbols are listed in the periodic table and are used as shorthand and in chemical equations, e.g., 2 H
		Because chemical symbols are often derived from the Latin or Greek name of the element, they may not bear much resemblance to the common English name, e.g., Na for sodium (Latin natrium) and Au for gold (Latin aurum).
	www.stationinformation.com /encyclopedia/c/ch/chemical_symbol.html (111 words)

	BISMUTH - LoveToKnow Article on BISMUTH (Site not responding. Last check: 2007-11-07)
		The basic nitrate is the salt generally prepared, and, in general outline, the process consists in dissolving the metal in nitric acid, adding water to the solution, boiling the precipitated basic nitrate with an alkali to remove the arsenic and lead, dissolving the residue in nitric acid, and reprecipitating as basic nitrate with water.
		Hampe prepared chemically pure bismuth by fusing the metal with sodium carbonate and sulphur, dissolving the bismuth sulphide so formed in nitric acid, precipitating the bismuth as the basic nitrate, redissolving this salt in nitric acid, and then precipitating with ammonia.
		In its chemical affinities it resembles arsenic and antimony; an important distinction is that it forms no hydrogen 5cornpound analogous to arsine and stibine.
	www.1911encyclopedia.org /B/BI/BISMUTH.htm (2501 words)

	Braille Code of Chemical Notation 1997 (Site not responding. Last check: 2007-11-07)
		The usual nomenclature for the letter(s) representing the name of a chemical element is "chemical symbol." In this Chemistry Code, the word "SYMBOL" (all upper case) is used to denote the letter(s) representing a chemical element and "symbol" (lower case) to denote the meaning as given in the Nemeth Code.
		A SYMBOL for a chemical element consists of a single capitalized letter or a capitalized letter followed by one or more lower case letters.
		Chemical SYMBOLS must be punctuated in the mathematical mode as defined in Nemeth Code Rule VI.
	www.brl.org /chemistry/rule03.html (310 words)

	Oxygen article - Oxygen nitrogen fluorine Full table Name Symbol Number Chemical series - What-Means.com
		Oxygen is the chemical element in the periodic table that has the symbol O and atomic number 8.
		The element is very common, found not only on Earth but throughout the universe.
		Due to its electronegativity, oxygen forms chemical bonds with almost all other elements (which is the origin of the original definition of oxidation).
	www.what-means.com /encyclopedia/Oxygen (855 words)

	search.cpan.org: Chemistry::Elements - Perl extension for working with Chemical Elements (Site not responding. Last check: 2007-11-07)
		The Element object constructor tries to be as flexible as possible - pass it an atomic number, chemical symbol, or element name and it tries to create the object.
		This function attempts to return the symbol of the chemical element given either the chemical symbol, element name, or atmoic number.
		Since this function will return the symbol if it is given a symbol, you can use it to test whether a string is a chemical symbol (although you have to play some tricks with case since get_symbol will try its best despite the case of the input data).
	search.cpan.org /~BDFOY/Chemistry-Elements-0.91/Elements.pm (977 words)

	Trivialities of Chemical Elements (Site not responding. Last check: 2007-11-07)
		The first known element, dirt (chemical symbol De), was characterized by Zog the Neanderthal somewhere in southern Europe before fire was invented.
		The element with the highest boiling point 5930 K, tungsten was used for the filament of light bulbs by Edison.
		Of all elements in solid state, the densest element is osmium (22.6 g/mL), not gold.
	www.science.uwaterloo.ca /~cchieh/cact/c120/qzelemnt.html (502 words)

	Helium - Wikipedia, the free encyclopedia
		Helium (He) is a colorless, odorless, tasteless, non-toxic, nearly inert monatomic chemical element that heads the noble gas series in the periodic table and whose atomic number is 2.
		Helium is the second most abundant element in the known Universe after hydrogen and constitutes 23% of all elemental matter measured by mass even though there are 8 times as many hydrogen atoms as helium ('elemental matter' does not include dark matter or dark energy, which together may account for 96% of the Universe).
		Since helium has a lower boiling point than any other element, low temperature and high pressure are used to liquefy nearly all the other gases (mostly nitrogen and hydrocarbons such as methane) from natural gas in order to extract gaseous helium (the general process is called fractional distillation).
	en.wikipedia.org /wiki/Helium (4907 words)

	bohrium on Encyclopedia.com (Site not responding. Last check: 2007-11-07)
		By reducing the temperature of the target atoms, the Germans were able to produce and unambiguously identify an isotope of element 107 having mass number 262 and a half-life of 5 msec.
		The Germans suggested the name nielsbohrium, which the Soviets had suggested be given to element 105 (dubnium), to honor the Danish physicist Niels Bohr.
		While this conforms to the names of other elements honoring individuals, where only the surname is taken, it was opposed by many who were concerned that it could be confused with boron, the name for element 5.
	www.encyclopedia.com /html/b1/bohrium.asp (388 words)

	Chemical Measurements
		Potassium is a chemical element with the symbol K. It belongs to a group of chemical elements called alkali metals.
		Magnesium is a chemical element with the symbol Mg.
		Manganese is a brittle, silver-gray metallic element with the symbol Mn.
	www.cst.cmich.edu /centers/mwrc/labchemical.htm (1279 words)

	I: Definition and Links by Encyclopedian.com - All about I (Site not responding. Last check: 2007-11-07)
		A word: the pronoun that is used in the English language by a person to refer to himself or herself.
		In chemistry, a symbol for the chemical element Iodine.
		A symbol (I) for the closed unit interval, that is all real numbers from 0 to 1 inclusive, and also for the identity matrix.
	www.encyclopedian.com /ia/I.html (232 words)

	[No title]
		Some of the more common elements and their chemical symbols are also included.
		The first letter in the symbol of any chemical element is always a capital letter.
		The second letter in the symbol of any chemical element (if one exists) is always a small letter.
	www.wincom.net /~jhalpin/ChemicalNomencalture.htm (81 words)

	AllRefer.com - terbium, Compound & Element (Compounds And Elements) - Encyclopedia
		The element and its compounds have limited commercial importance; some minor uses are in lasers, semiconductor devices, and phosphors for color television picture tubes.
		The pure metal may be produced by chemical reduction of the halide with calcium.
		The element was discovered in 1843 by C. Mosander as its oxide, which he called erbia.
	reference.allrefer.com /encyclopedia/T/terbium.html (269 words)

	Helium (He) - Chemical properties, Health and Environmental effects
		Helium is one of the noble gases of group O in the periodic table.
		The main application of ultralow temperature is in the development of the superconductivity state, in which the resistance to the electricity flux is almost zero.
		Other applications are its use as pressurizing gas in liquid propellants for rockets, in helium-oxygen mixtures for divers, as working fluid in nuclear reactors cooled down by gas and as gas carrier in chemical analysis by gas chromatography.
	www.lenntech.com /Periodic-chart-elements/He-en.htm (392 words)

	Notebook
		Chemically, clays are hydrous aluminum silicates, ordinarily containing impurities, e.g., potassium, sodium, calcium, magnesium, or iron, in small amounts.
		Residual clays are most commonly formed by surface weathering, which gives rise to clay in three ways--by the chemical decomposition of rocks, such as granite, containing silica and alumina; by the solution of rocks, such as limestone, containing clayey impurities, which, being insoluble, are deposited as clay; and by disintegration and solution of shale.
		Chemically the feldspars are silicates of aluminum, containing sodium, potassium, calcium, or varium or combinations of these elements.
	www.noteaccess.com /MATERIALS/Ceramics/Clay.htm (2537 words)

	Principal Metals
		A substance having metallic properties and composed of two or more chemical elements of which at least one is a metal.
		Addition of such alloying elements is usually for the purpose of increased hardness, strength or chemical resistance.
		Element No. 13 of the periodic system; Atomic weight 26.97; silvery white metal of valence 3; melting point 1220 (degrees) F; boiling point approximately 4118 (degrees) F.; ductile and malleable; stable against normal atmospheric corrosion, but attacked by both acids and alkalis.
	www.principalmetals.com /glossary/adoc.htm (1386 words)

	Sodium (Na) - Chemical properties, Health and Environmental effects
		Chemical properties of sodium - Health effects of sodium - Environmental effects of sodium
		Chemical element, symbol: Na, atomic number: 11 and atomic weight 22,9898.
		Environmental fate: this chemical is not mobile in solid form, although it absorbs moisture very easily.
	www.lenntech.com /Periodic-chart-elements/Na-en.htm (517 words)

	The Gnome Chemistry Utils: gcu::Element Class Reference
		This static method is used to know on what side of the symbol of the element whose atomic number is Z attached hydrogens should be written.
		The chemical symbol of the element whose atomic number is Z or NULL if the element is unknown.
		The atomic number of the element whose chemical symbol is used as parameter or 0 if the element is unknown.
	www.nongnu.org /gchemutils/reference/classgcu_1_1Element.html (576 words)

	Counting Atoms in Chemical Formulas (Site not responding. Last check: 2007-11-07)
		When expressing chemical information on paper, we will make frequent use of the chemical symbols in the periodic table.
		In these cases, we can write a number in front of the element symbol or chemical formula to indicate the number of atoms or molecules involved.
		You can count the number of atoms of each element in a chemical formula by multiplying the coefficient by the subscript, recognizing that those coefficients and subscripts that are not shown are equal to 1.
	www.accd.edu /pac/chemistr/lectures/atomcnt.htm (1409 words)

	Chemical symbol (Site not responding. Last check: 2007-11-07)
		Chemical symbols are listed in the periodic table and are used as shorthand and in chemical equations, e.g., 2 H + O → H
		Because chemical symbols are often derived from the Latin or Greek name of the element, they may not bear much resemblance to the common English name, e.g., Na for sodium and Au for gold.
		It uses material from the wikipedia article Chemical symbol.
	www.eurofreehost.com /ch/Chemical_symbol.html (183 words)

	Periodic Table of the Elements
		For elements have no stable nuclides, the value enclosed in brackets indicates the mass number of the longest-lived isotope of the element.
		However three such elements (Th, Pa and U) do have a characteristic terrestrial isotopic composition, and for these an atomic weight is tabulated.
		Glossary of chemical terms contain a brief definitions of selected terms of importance in chemistry and related fields of science.
	www.ktf-split.hr /periodni/en (496 words)

	rhenium on Encyclopedia.com (Site not responding. Last check: 2007-11-07)
		Of the elements, only carbon and tungsten have higher melting points and only iridium, osmium, and platinum are more dense.
		The chemical properties of rhenium are like those of technetium, the element above it in group VIIb of the periodic table.
		The accuracy of prediction of the properties of the element led to its discovery in 1925 by Walter Nodack, Ida Tacke, and Otto Berg in platinum ores and the mineral columbite.
	www.freeencyclopedia.com /html/r1/rhenium.asp (464 words)

	[No title] (Site not responding. Last check: 2007-11-07)
		] The study of the behavior and structure of molecules, including the quantum-mechanical explanation of several kinds of chemical binding between atoms in a molecule, directed valence, the polarizability of molecules, the quantization of vibrational, rotational, and electronic motions of molecules, and the phenomena arising from intermolecular forces.
		O and CO ; a molecule is the smallest unit of matter which can exist by itself and retain all its chemical properties.
		A metallic, lead-gray mineral that crystallizes in the hexagonal system and is commonly found in scales or foliated masses; hardness is 1.5 on Mohs scale, and specific gravity is 4.7; it is chief ore of molybdenum.
	www.accesscience.com /Dictionary/M/M33/DictM33.html (2211 words)

	Germanium is a well-known chemical element for its importance in modern science.
		Germanium is a well-known chemical element for its importance in modern science.
		ermanium is a well-known chemical element for its importance in modern science.
		The chemical symbol of germanium is Ge and its atomic number is the 32nd which consists of 32 electrons.
	www.ge32.co.kr /english%20home/detail.htm (682 words)

	Element Tin (Sn) (Site not responding. Last check: 2007-11-07)
		The name comes from the Anglo-Saxon tin ; the chemical symbol comes from the Latin stannum, related to the word stagnum ('driping'), because tin melts easily.
		Some tin compound are employed as anti-fouling paint for ships and boat to prevent barnacles, but even at low levels, these compounds are deadly to marine life such as oysters.
		Tin is thought to be an essential element for some living things, and this may also be true for humans.
	www.durlstoncourt.co.uk /academic/science/Periodic_table_stuff/Sn.htm (111 words)

	Nuclear Notation
		Standard nuclear notation shows the chemical symbol, the mass number and the atomic number of the isotope.
		For stable isotopes light elements, the number of neutrons will be almost equal to the number of protons, but a growing neutron excess is characteristic of stable heavy elements.
		Information about the isotopes of each element and their abundances can be found by going to the periodic table and choosing an element.
	hyperphysics.phy-astr.gsu.edu /hbase/nuclear/nucnot.html (480 words)

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