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Topic: Roentgenium

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	Roentgenium 111
		Following the 80th Meeting of the Bureau in Bled, Slovenia, the name roentgenium for the element of atomic number 111, with symbol Rg was officially approved as of 1 November 2004.
		The IUPAC Council, at its meeting at Ottawa, Canada in 2003, delegated the authority to approve a name for the element of atomic number 111 to the Bureau.
		Priority of discovery of Roentgenium by the Hofmann et al.
	www.apsidium.com /elements/111.htm (342 words)

	The Element Roentgenium
		Roentgenium is a chemical element in the periodic table that has the symbol Rg (formerly temporarily Uuu) and atomic number 111.
		Roentgenium was discovered by S. Hofmann at the Gesellschaft für Schwerionenforschung in Darmstadt, Germany in 1994
		Check out Roentgenium on the Periodic Table which arranges each chemical element according to its atomic number, as based on the periodic law, so that chemical elements with similar properties are in the same column.
	www.periodic-table.org.uk /element-roentgenium.htm (326 words)

	Roentgenium at AllExperts
		Roentgenium (former temporary name: unununium or eka-gold) is a chemical element in the periodic table that has the symbol Rg (former temporary symbol: Uuu) and atomic number 111 making it one of the super-heavy atoms.
		It is a synthetic element whose longest-lived isotope has a mass of 280 and a half-life of 3.6 seconds.
		The name roentgenium was accepted as a permanent name on November 1 2004 in honor of Wilhelm RÃ¶ntgen; before this date, the element was known under the temporary IUPAC systematic element name unununium.
	en.allexperts.com /e/r/ro/roentgenium.htm (362 words)

	Chemie.DE News-Center: Neues chemisches Element heißt Roentgenium (Site not responding. Last check: )
		09.11.2004 - (dpa) - Das in Deutschland entdeckte chemische Element mit der Ordnungszahl 111 wird den Namen Roentgenium (Rg) tragen.
		Dies teilte die Gesellschaft für Schwerionenforschung (GSI) in Darmstadt mit, wo das Element 1994 erstmals erzeugt wurde.
		Roentgenium zerfällt bereits nach Sekundenbruchteilen und kann nur mit empfindlichen Analyseverfahren nachgewiesen werden.
	www.chemie.de /news/d/40716/?pw=a&defop=and&wild=yes&sdate=01%25252525252525252F01%25252525252525252F1995&edate=02%25252525252525252F22%25252525252525252F2006 (138 words)

	Unununium Information Center - who discovered unununium
		Roentgenium (former temporary name: unununium or eka-gold) is a chemical element in the periodic table that has the symbol what is unununium Rg (formerly temporarily Uuu) and atomic number 111 making it one of the super-heavy atoms.
		It is a synthetic element whose longest-lived pictures of unununium isotope has a mass of 280 and a half-life of 3.6 seconds.
		The unununium atomic name roentgenium was accepted as a permanent name on November 1, 2004 in honour of Wilhelm Roentgen; before this date, the element was known under the temporary IUPAC systematic who discovered unununium element name unununium.
	www.scipeeps.com /Sci-Chemistry_Topics_T_-_V/Unununium.html (236 words)

	Roentgenium Information Center - lewis structure for element roentgenium
		Roentgenium (former roentgenium pictures temporary name: unununium or eka-gold) is a chemical element in the periodic table that has the symbol Rg (formerly temporarily Uuu) and atomic number 111 making it one of the super-heavy atoms.
		It is a synthetic element whose longest-lived isotope has a mass of 280 and a half-life of 3.6 seconds.
		The name roentgenium was accepted as a permanent name lewis structure for element roentgenium on November 1, 2004 in honour of Wilhelm Roentgen; before this date, the element was known under the temporary IUPAC systematic element name unununium.
	www.scipeeps.com /Sci-Chemistry_Topics_Pr_-_R/Roentgenium.html (231 words)

	Omnipelagos.com ~ article "Roentgenium" (Site not responding. Last check: )
		Roentgenium (IPA:) is a chemical element in the periodic table that has the symbol Rg and atomic number 111 making it one of the super-heavy atomss.
		The name roentgenium was accepted as a permanent name on November 1 2004 in honor of Wilhelm Röntgen; before this date, the element was known under the temporary IUPAC systematic element name unununium (IPA:, symbol Uuu).
		It is unlikely that roentgenium can be used to make coins since all of its isotopes are radioactive with very short half-lives.
	www.omnipelagos.com /entry?n=roentgenium (267 words)

	17.11.2006
		November 2006 an der GSI auf den Namen Roentgenium mit dem chemischen Symbol Rg getauft.
		Roentgenium ist zurzeit das schwerste offiziell anerkannte chemische Element.
		Zur Entdeckung von Roentgenium wurden mit ihm Nickel-Ionen auf hohe Geschwindigkeiten gebracht und auf eine Bismutfolie in einem Targetrad (s.u.) geschossen.
	www.gsi.de /portrait/Pressemeldungen/17112006.html (1014 words)

	Roentgenium (Rg)
		Omdat slechts enkele unununium atomen zijn geproduceerd, kent het momenteel geen toepassingen buiten het standaard wetenschappelijk onderzoek.
		Omdat het zo instabiel is, wordt elke hoeveelheid die wordt gevormd zo snel afgebroken in andere elementen dat er geen reden is om gezondheidseffecten van roentgenium te achterhalen.
		Vanwege het extreem korte halfwaardetijd van roentgenium (ongeveer 1,5 milliseconden), is er geen reden om de effecten van ununundium op het milieu te bestuderen.
	www.lenntech.com /elementen-periodiek-systeem/Rg.htm (179 words)

	Chemistry : Periodic Table : roentgenium : key information
		Element 111, roentgenium, was discovered on 8th December 1994 at the GSI in Darmstadt, Germany.
		Chemically, roentgenium should be in the same group as the elements copper, silver, and gold (Group 11).
		Here is a brief summary of the isolation of roentgenium.
	www.webelements.com /webelements/elements/text/Rg/key.html (200 words)

	It's Elemental - The Element Roentgenium
		Roentgenium was first produced by Peter Armbruster, Gottfried Münzenber and their team working at the Gesellschaft für Schwerionenforschung in Darmstadt, Germany in late 1994.
		They bombarded atoms of bismuth-209 with ions of nickel-64 with a device known as a linear accelerator.
		Roentgenium's most stable isotope, roentgenium-280, has a half-life of about 3.6 seconds.
	education.jlab.org /itselemental/ele111.html (95 words)

	roentgenium — FactMonster.com
		The discovery was officially confirmed in 2003, and the discoverers named the element in honor of Wilhelm Conrad
		Periodic Table of the Elements: Roentgenium - Periodic Table of the Elements: Roentgenium 111 Rg Roentgenium (272) 2 · 8 · 18 32...
		Rg - Rg Rg, symbol for the element roentgenium.
	www.factmonster.com /encyclopedia/roentgenium (189 words)

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