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Topic: Berkelium

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	It's Elemental - The Element Berkelium
		Berkelium was first produced by Stanley G. Thompson, Glenn T. Seaborg, Kenneth Street, Jr.
		Berkelium's most stable isotope, berkelium-247, has a half-life of about 1,380 years.
		Since only small amounts of berkelium have ever been produced, there are no known uses for berkelium and its compounds outside of basic scientific research.
	education.jlab.org /itselemental/ele097.html (119 words)

	Berkelium - Wikipedia, the free encyclopedia
		Berkelium is a synthetic element in the periodic table that has the symbol Bk and atomic number 97.
		Berkelium was the fifth transuranic element to be synthesized.
		Berkelium was first synthesized by Glenn T. Seaborg, Albert Ghiorso, Stanley G. Thompson, and Kenneth Street, Jr at the University of California, Berkeley in December 1949.
	en.wikipedia.org /wiki/Berkelium (370 words)

	AllRefer.com - berkelium, Compound & Element (Compounds And Elements) - Encyclopedia
		Berkelium is believed to be similar to the other members of the actinide series and to terbium, its homolog in the lanthanide series.
		Berkelium metal exists in two crystal modifications (see allotropy) and is chemically reactive; the chloride, fluoride, sulfide, nitrate, sulfate, perchlorate, oxide, and dioxide have been produced.
		Berkelium was the fifth transuranium element to be synthesized.
	reference.allrefer.com /encyclopedia/B/berkeliu.html (299 words)

	ELEMENT: BERKELIUM
		Berkelium was first prepared in elemental form in 1968 and weighed 1.7 micrograms.
		Berkelium is known to exist in oxidation states 0, III, and IV in solution and the solid state.
		Berkelium is in a unique position as the first member of the second half of the actinide series.
	www.radiochemistry.org /periodictable/elements/97.html (325 words)

	Berkelium (Bk) - Chemical properties, Health and Environmental effects
		The eighth member of the actinide transition series, berkelium was discovered in December 1949 by Thompson, Albert Ghiorso, and Glenn Seaborg, and was the fifth transuranium element synthesized.
		Berkelium doesn’t occur naturally, and has not been found in the earth’s crust, so there is no reason to consider its health hazards.
		Berkelium doesn’t occur naturally, and has not been found in the earth’s crust, so there is no reason to consider its environmental effects.
	www.lenntech.com /Periodic-chart-elements/Bk-en.htm (527 words)

	VIAS Encyclopedia: Berkelium
		(Berkeley, home of the University of California) Berkelium, the eighth member of the actinide transition series, was discovered in December 1949 by Thompson, Ghiorso, and Seaborg, and was the fifth transuranium element synthesized.
		One of the first visible amounts of a pure berkelium compound, berkelium chloride, was produced in 1962.
		Berkelium probably has not yet been prepared in elemental form, but is expected to be a silvery metal, easily soluble in dilute mineral acids, and readily oxidized by air or oxygen at elevated temperatures to form the oxide.
	www.vias.org /encyclopedia/persys_bk.html (215 words)

	Berkelium (Site not responding. Last check: 2007-10-26)
		Berkelium was discovered in 1949 (December) by Thompson, Ghiorso and Seaborg.
		Berkelium has not been produced in its elemental form.
		Because of Berkelium’s rarity there are no commercial or technological uses at present.
	www.azom.com /details.asp?ArticleID=629 (140 words)

	Berkelium (Site not responding. Last check: 2007-10-26)
		Berkelium is sometimes found in human skulls and is very radio active.
		Berkelium was discovered in Berkley, California in 1949.
		Although Berkelium has many unknow factors without it the periodic table wouldn't be complete.
	www.mvschools.org /ms/projects/html/black/berkelium.htm (364 words)

	Berkelium
		A radioactive metallic element in the actinide series, berkelium was first synthesized by bombarding americium with alpha particles (helium ions) and was named after Berkeley, California.
		One of the longest lived isotopes of the element, berkelium-249 (half-life 320 days), was later synthesized by subjecting a curium-244 target with an intense beam of neutrons.
		19 radioisotopes of berkelium have been characterized, with the most stable being Bk-247 with a half-life of 1380 years, Bk-248 with a half-life of >9 years, and Bk-249 with a half-life of 320 days.
	encycl.opentopia.com /term/Berkelium (384 words)

	Bk - Berkelium
		(Berkeley, home of the University of California) Berkelium, the eighth member of theactinide transition series, was discovered in December 1949 by Thompson, Ghiorso, andSeaborg, and was the fifth transuranium element synthesized.
		One of the first visibleamounts of a pure berkelium compound, berkelium chloride, was produced in 1962.
		Berkelium probably has not yet been prepared in elemental form, butis expected to be a silvery metal, easily soluble in dilute mineral acids, and readilyoxidized by air or oxygen at elevated temperatures to form the oxide.
	www.physlink.com /Reference/ChemicalElements/berkelium.cfm (182 words)

	Berkelium (Element) (Site not responding. Last check: 2007-10-26)
		Berkelium was discovered in December 1949 by Thompson, Ghiorso, and Seaborg, and was the fifth transuranium element synthesized.
		Berkelium tends to accumulate in the skeletal system.
		Because of the rarity of Berkelium, it has no commercial or technological use.
	www.tamuk.edu /chemistry/WebElements/berkelium_element.htm (39 words)

	Let's Learn About Berkelium: Woo! Woo! (Site not responding. Last check: 2007-10-26)
		The boiling point of Berkelium is 212 F and 100 C. The crystal structure of Berkelium is Hexagonal.
		The number of neutrons that are in Berkelium is 150, and the number of protons and electrons is 97.
		The fluoride compounds of Berkelium are BkF3 and BkF4.
	www.kn.pacbell.com /wired/fil/pages/listberkeliuje.html (1614 words)

	berkelium
		All berkelium isotopes are radioactive; berkelium-247 is the longest lived (1,400-year half-life).
		Tracer chemical investigations have shown that berkelium exists in aqueous solutions in the +3 and +4 oxidation states, presumably as Bk and Bk ions.
		The solubility properties of berkelium in its two oxidation states are entirely analogous to those of the other actinides and to the lanthanide elements in the corresponding oxidation states.
	www.britannica.com /nobel/micro/64_86.html (208 words)

	97 Berkelium
		According to the actinide concept, element 97 is the chemical homolog of terbium, which was named after the Swedish town of Ytterby.
		Stan and Al Ghiorso wanted to give berkelium the chemical symbol Bm, because it had been such a stinker in resisting identification for so long, but cooler heads prevailed and the symbol Bk was finally accepted by the scientific world." Chemtech 7 (1978), p.
		Stan [Thompson] and Al [Ghiorso] suggested that berkelium's chemical symbol should be the letters Bm, because it had been such a stinker in resisting chemical identification for so long, but cooler heads prevailed to choose Bk.
	www.vanderkrogt.net /elements/elem/bk.html (1023 words)

	berkelium (Site not responding. Last check: 2007-10-26)
		Berkelium - (Berkeley, home of the University of California), Bk; at.wt.
		Berkelium, the eighth member of the actinide transition series, was discovered in December 1949 by Thompson, Ghiorso, and Seaborg, and was the fifth transuranium element synthesized.
		The existence of 249Bk, with a half-life of 32O days, makes it feasible to isolate berkelium in weighable amounts so that its properties can be investigated with macroscopic quantities.
	www.speclab.com /elements/berkelium.htm (244 words)

	The Elements: Berkelium (Site not responding. Last check: 2007-10-26)
		The existence of Bk(249), with a half-life of 314 days, makes it feasible to isolate berkelium in weighable amounts so that its properties can be investigated with macroscopic quantities.
		One of the first visible amounts of a pure berkelium compound - berkelium chloride - was produced in 1962.
		Berkelium has not yet been prepared in elemental form, but it is expected to be a silvery metal, easily soluble in dilute mineral acids, and readily oxidized by air or oxygen at elevated temperatures to form the oxide.
	www.cmbi.kun.nl /~ott/elements/berkelium.html (243 words)

	Chemical Elements.com - Berkelium (Bk)
		I currently do not know of any links for Berkelium.
		For more information about citing online sources, please visit the MLA's Website.
		Use of this web site is restricted by this site's license agreement.
	www.chemicalelements.com /elements/bk.html (34 words)

	Berkelium : The Poetic Table of the Elements at everypoet.com
		Berkelium : The Poetic Table of the Elements at everypoet.com
		In the sixties the elements got together for a love in.
		All except Berkelium, which was protesting, because of all the harmfull stray radiation.
	www.everypoet.net /element/display.php?symbol=Bk (34 words)

	The Element Berkelium
		Berkelium was first synthesized by Glenn T. Seaborg, Albert Ghiorso, Stanley G. Thompson, and Kenneth Street, Jr at the University of California, Berkeley, USA in 1949.
		Check out Berkelium 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.
		Our Periodic Table is simple to use - just click on the symbol for Berkelium for additional information and for an instant comparison of the Atomic Weight, Melting Point, Boiling Point and Mass - G/cc with any other element.
	www.periodic-table.org.uk /element-berkelium.htm (277 words)

	C&EN: IT'S ELEMENTAL: THE PERIODIC TABLE - BERKELIUM
		As prophesied by Danish chemist Niels Bohr, element 97 behaved similarly to its upstairs neighbor on the periodic chart, terbium.
		By analogy to its chemical homolog terbium, berkelium was named after its birthplace.
		The Berkeley team's periodic table tributes to their city, state, and country--between 1944 and 1950, UC Berkeley scientists had reported the discovery of berkelium, californium (element 98), and americium (element 95)--briefly caught the attention of some members of the U.S. media.
	pubs.acs.org /cen/80th/berkelium.html (846 words)

	berkelium by kate burbank (Site not responding. Last check: 2007-10-26)
		- Berkelium is part of the actinide group of the periodic table.
		Berkelium can be found in period seven and group IIIb of the periodic table.
		It has an atomic mass of 247 and its atomic number is 97.
	www.mvschools.org /ms/projects/EAGLE/red/berkelium.htm (307 words)

	A Periodic Table of the Elements From Mineral Information Institute (Site not responding. Last check: 2007-10-26)
		Berkelium is too rare to have any commercial or industrial uses.
		The most stable isotope of berkelium has a half-life of 1,400 years.
		Obtained from: Berkelium is obtained by particle bombardment of plutonium.
	www.mii.org /periodic/Bk.htm (120 words)

	Berkelium (Bk) (Site not responding. Last check: 2007-10-26)
		A total of ten isotopes are now known and have been synthesized.
		Berkelium chloride, which is one of the first visible amounts of a pure berkelium compound, was produced in 1962.
		Berkelium, which is similar to other actinide elements, tends to accumulate in the skeletal system.
	www.bayerus.com /msms/fun/pages/periodic/berkelium (83 words)

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