The bulk properties of astatine are not known with any certainty, but they have been predicted based on its similarity to the other halogens, the lighter elements directly above it in the periodic table: fluorine, chlorine, bromine and especially iodine. It is likely to have a dark or ...
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...
1940 in The United States Gas phaseN/A CAS NumberCAS7440-68-8 CID NumberN/A RTECS NumberN/A Electrical properties Electrical TypeN/A Electrical ConductivityN/A ResistivityN/A Superconducting PointN/A Magnetic properties Magnetic TypeN/A
Astatine - symbol At - chemical element of the 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、
Astatine electron configuration, X-ray photoelectron spectra, and other elemental information – part of the XPS Reference Table of Elements.
Classification and Position of the Element on the Periodic Table [1] Properties and Characteristics of Astatine Atomic Data of Astatine What is Astatine Used for Astatine Hazards Interesting Facts Astatine Price What is Astatine Astatine (pronounced as AS-teh-teen) is a non-metal represented by the...
The chemical symbol for astatine is At. This element is in period 6 group 17 on the periodic table. It is a part of the halogen family, which is a group of electronegative elements in group 17. What is astatine used for? Astatine does not have many uses because of its radioactivity and...
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. ...
Symbol At A highly unstable, radioactive element that is the heaviest of the halogen elements. The most stable of its many isotopes has a half-life of only about eight hours. Atomic number 85. See Periodic Table. The American Heritage® Student Science Dictionary, Second Edition. Copyright ...
active element, the heaviest of the halogen group, that resembles iodine in solution. Its longest lived isotope has a mass number of 210 and has a half-life of 8.3 hours. Atomic number 85; melting point 302°C; boiling point 337°C; valence probably 1, 3, 5, 7. SeePeriodic Table....