Astatine electron configuration, X-ray photoelectron spectra, and other elemental information – part of the XPS Reference Table of Elements.
Astatine (At - 85) from periodic table,站酷海洛,一站式正版视觉内容平台,站酷旗下品牌.授权内容包含正版商业图片、艺术插画、矢量、视频、音乐素材、字体等,已先后为阿里巴巴、京东、亚马逊、小米、联想、奥美、盛世长城、百度、360、招商银行、工商银行等数万家企业级客
Astatine is highly radioactive and is only available in tiny quantities. Its properties are inferred from its position in the periodic table and by studying its chemistry in extremely dilute solutions. Like the other halogens, astatine would be expected to form salts with metals such assodium. A...
Atomic Weight210[note] DensityN/A Melting Point302 °C Boiling PointN/A Thermal properties PhaseSolid Melting Point302 °C Boiling PointN/A Absolute Melting Point577 K Absolute Boiling PointN/A Critical PressureN/A Critical TemperatureN/A ...
Astatine is a member of the halogen family, elements in Group 17 (VIIA) of the periodic table. It is one of the rarest elements in the universe. Scientists believe that no more than 25 grams exist on the Earth's surface. All isotopes of astatine are radioactive and decay into other ele...
The bulk properties of astatine are not known with certainty. Many of them have been estimated from its position on the periodic table as a heavier analog of iodine, and a member of the halogens (the group of elements including fluorine, chlorine, bromine, iodine and tennessine). However, ...
All that is known about the element has been estimated from knowing its position in the periodic table below iodine and by studying its chemistry in extreme diluted solutions. Applications Astatine is never encountered outside nuclear facilities or research laboratories. Astatine in the environment ...
See Periodic Table. [Greek astatos, unstable; see astasia + -ine.] American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. astatine (...
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The rarity and radioactivity of astatine have made it a challenging subject for in-depth study, resulting in it being one of the less understood elements on the periodic table. Nevertheless, its enigmatic nature and the fascinating journey to its discovery continue to captivate the imagination of ...