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Latest Extension of the periodic table beyond the seventh period Stories

a87deb3b60a03f8a30888bca7ecaf0941
2008-04-07 10:23:29

Modern-day scientific Magellans and Columbus's, exploring the uncharted seas at the fringes of the Periodic Table of the Elements, have landed on one long-sought island "” the fabled Island of Stability, home of a new genre of superheavy chemical elements sought for more than three decades.In a presentation at the 235th national meeting of the American Chemical Society, one of the captains of these expeditions into the unknown, described how researchers now are eying other islands on...


Latest Extension of the periodic table beyond the seventh period Reference Libraries

16_ecfbd00eb300b269b02b7b3bf0360dc6
2009-07-09 17:04:18

Actinium is a radioactive chemical element. The symbol for Actinium is Ac and the atomic number is 89. Actinium was discovered in 1899 by French chemist André-Louis Debierne. It was the first non-primordial radioactive element to be isolated. Actinium is amongst a group of 15 similar elements within the periodic table that make up the actinoid series. This substance was also independently discovered by Friedrich Oskar Giesel in 1902 and named it emanium in 1904. In 1904 he named it...

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Word of the Day
glogg
  • Scandinavian punch made of claret and aquavit with spices and raisins and orange peel and sugar.
This word comes from the Swedish 'glogg,' which is an alteration of 'glodgat,' mulled (wine).
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