Astatine
Indeterminiate because this element is relatively short lived and exists only as a transient decay product.
Dale R. Corson, Kenneth R. Mackenzie, and Emilio Segre are credited with the discovery of astatine in 1940.
Further Details:
Info and Facts about the element Astatine from the Periodic Table. Interesting Facts, information about Astatine the element. Concise facts and info about Astatine ... Facts about Astatine - Element included on the Periodic Table...
www.facts-about.org.uk/science-element-astatine.htm www.facts-about.org.uk/science-element-astatine.htm
Get periodic table facts on the chemical and physical properties of the element astatine. ... Sources: Astatine was first synthesized by Corson, MacKenzie, and Segre at the University of California in 1940 by bombarding bismuth with alpha particles. Astatine may be produced ... Actinium Facts - Periodic Table of the Elements...
chemistry.about.com/od/elementfacts/a/astatine.htm chemistry.about.com/od/elementfacts/a/astatine.htm
Astatine - Wikipedia, the free encyclopedia
Astatine (pronounced /ˈæstətiːn/ AS -tə-teen or AS -tətin ) is a radioactive chemical element with the symbol At and atomic number 85. It is the heaviest of the discovered ...
en.wikipedia.org/wiki/Astatine
Photographs and descriptions of many samples of the element Astatine in the Periodic Table. ... The rock probably contains on the order of a few atoms of astatine at any one time, as part of the complex decay chain of the uranium that makes up a much larger fraction of the sample. In no meaningful way is astatine itself...
www.periodictable.com/Elements/085/index.html
・ 1 Know its Greek language root. Astatine is named for the Greek word "astatos," meaning unstable. Astatine... ・ 2 Look for information about its discovers. The discovery of astatine in 1940 is credited to Dale R.... ・ 3 Read up ...
http://www.ehow.com/how_2042972_find-out-more-astatine....
Visit this site for a comprehensive educational resource on the Element Astatine. Information and facts regarding the properties of the element Astatine. Info about the element Astatine includes the definition, classification, history, properties, use and occurrence. ... Definition of the Astatine Element;
www.periodic-table.org.uk/element-astatine.htm www.periodic-table.org.uk/element-astatine.htm
facts on astatine 7 ... interesting facts on astatine 7 ... astatine facts 5...
www.about-the-element.com/85-the-element-astatine.html www.about-the-element.com/85-the-element-astatine.html
Astatine information, including Technical Data, Safety Data and its high purity properties, research, applications and other useful facts are discussed below. Scientific facts such as the atomic structure, ionization energy, abundance on Earth, conductivity and thermal properties are included.
www.americanelements.com/at.html
Astatine is a synthetic element that is highly radioactive. It also is very short lived. It's half-life is only 8.3 hours! It has never been found outside of nuclear facilities or laboratories. In 1931 Drs. Fred Allison and Edgar J. Murphy announced a new element by the name "Albamine".
www.fairfield.k12.ct.us/tomlinson/ELEMENTs%2004/At_fact... www.fairfield.k12.ct.us/tomlinson/ELEMENTs%2004/At_facts.htm