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:
Physical Properties of Astatine ... Comprehensive data on the chemical element Astatine is provided on this page; including scores of properties, element names in many languages, most known nuclides of Astatine. Common chemical compounds are also provided for many elements. ... Asbestos, its Chemical & Physical Properties...
environmentalchemistry.com/yogi/periodic/At.html
Astatine Menu ... Physical Properties of Astatine ... Asbestos, its Chemical & Physical Properties...
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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
chemical properties, health and environmental effects of astatine ... Chemical properties of astatine - Health effects of astatine - Environmental effects of astatine...
www.lenntech.com/periodic/elements/at.htm
Astatine is a member of the halogen family, elements in Group 17 (VIIA) of the periodic table. It is one of the ... The properties of astatine are not well known. The element breaks down too fast to allow experiments that take more than a few hours. No melting point, boiling point, or density is specified for astatine.
www.chemistryexplained.com/elements/A-C/Astatine.html www.chemistryexplained.com/elements/A-C/Astatine.html
Astatine General Information ... Astatine Chemical Properties ... Return to Top Element Properties: General - Physical - Chemical - Nuclear - Energy...
www.qivx.com/ispt/elements/ptw_085.php
This WebElements periodic table page contains physical properties for the element astatine ... You are here: WebElements Periodic Table » Astatine » Physical properties...
www.webelements.com/astatine/physics.html www.webelements.com/astatine/physics.html
astatine,periodic tables,metal powder information,physical data ... Physical Properties of Elements for Research & Industry; AEE Website Table of Contents ... HISTORY, BACKGROUND & USES:; Astatine is a radioactive element that was sythetically produced.
www.micronmetals.com/85.htm
The Element Astatine - Basic Physical and Historical Information ... The Element Astatine; [Click for Isotope Data] ... Astatine was produced by Dale R. Carson, K.R. MacKenzie and Emilio Segrè by bombarding an isotope of bismuth, bismuth-209, with alpha particles that had been accelerated in a device called a cyclotron.
education.jlab.org/itselemental/ele085.html