Astatine is a chemical element; it has symbol At and atomic number 85. It is the rarest naturally occurring element in the Earth's crust, occurring only...
81 KB (9,248 words) - 23:54, 20 September 2024
Astatine (85At) has 41 known isotopes, all of which are radioactive; their mass numbers range from 188 to 229 (though 189At is undiscovered). There are...
29 KB (1,454 words) - 12:10, 10 October 2024
Astatine compounds are compounds that contain the element astatine (At). As this element is very radioactive, few compounds have been studied. Less reactive...
21 KB (2,340 words) - 08:43, 5 September 2024
Interhalogen (redirect from Astatine monochloride)
more different halogen atoms (fluorine, chlorine, bromine, iodine, or astatine) and no atoms of elements from any other group. Most interhalogen compounds...
20 KB (2,319 words) - 15:26, 3 September 2024
Tennessine (redirect from Eka-Astatine)
of astatine would be 147 pm. With the seven outermost electrons removed, tennessine is finally smaller; 57 pm for tennessine and 61 pm for astatine. The...
67 KB (10,826 words) - 15:55, 10 October 2024
Hydrogen astatide (redirect from Astatine hydride)
as astatine hydride, astatane, astatidohydrogen or hydroastatic acid, is a chemical compound with the chemical formula HAt, consisting of an astatine atom...
5 KB (406 words) - 15:07, 16 August 2024
second rarest naturally occurring element (after astatine). Francium's isotopes decay quickly into astatine, radium, and radon. The electronic structure of...
36 KB (4,059 words) - 01:17, 19 August 2024
chlorine (Cl), bromine (Br), iodine (I), and the radioactive elements astatine (At) and tennessine (Ts), though some authors would exclude tennessine...
52 KB (5,499 words) - 18:00, 11 September 2024
Takahashi, N. (1982). "Estimation Chemical Form Boiling Point Elementary Astatine by Radio Gas Chromatography". Radiochimica Acta. 31 (3–4): 201–203. doi:10...
40 KB (272 words) - 22:54, 15 August 2024
arsenic, antimony, and tellurium are usually considered to be metalloids). Astatine, which is usually classified as a nonmetal or a metalloid, has been predicted...
124 KB (15,306 words) - 17:46, 2 August 2024
Astatine bromide is an interhalogen compound with the chemical formula AtBr. Astatine bromide is produced by the reaction of astatine with an aqueous...
2 KB (95 words) - 15:07, 16 August 2024
Astatine iodide is an interhalogen compound with the chemical formula AtI. It is the second heaviest known interhalogen compound, after iodine tribromide...
2 KB (108 words) - 15:07, 16 August 2024
Period 6 element (section Astatine)
1019 years, polonium, astatine, and radon are some of the shortest-lived and rarest elements known; less than a gram of astatine is estimated to exist...
58 KB (6,563 words) - 12:52, 29 June 2024
seaborgium-261m 92 astatine-215 100 astatine-216m 100 protactinium-218 113 lead-206m1 125 thorium-216m1 137 curium-248m 146 neptunium-219 150 astatine-212m2 152...
69 KB (284 words) - 23:49, 19 September 2024
Sodium astatide (category Astatine compounds)
compound of sodium and astatine with the chemical formula NaAt. Sodium astatide solution has been prepared by distilling astatine from the bismuth alpha-ray...
3 KB (232 words) - 15:08, 16 August 2024
in nature after all: technetium (element 43), promethium (element 61), astatine (element 85), neptunium (element 93), and plutonium (element 94). No element...
249 KB (26,983 words) - 11:34, 1 October 2024
physicist and Nobel laureate, who discovered the elements technetium and astatine, and the antiproton, a subatomic antiparticle, for which he was awarded...
35 KB (4,014 words) - 15:33, 15 August 2024
Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium...
99 KB (11,047 words) - 03:21, 28 September 2024
Aleksandrovich (1970). Analytical Chemistry of Technetium, Promethium, Astatine, and Francium. Translated by R. Kondor. Ann Arbor–Humphrey Science Publishers...
40 KB (290 words) - 11:54, 10 March 2023
Ataxia–telangiectasia, an immunodeficiency disorder Athletic training Atrial tachycardia Astatine (symbol At), a chemical element Ampere-turn (symbol A t), an International...
3 KB (434 words) - 08:58, 14 July 2024
Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium...
130 KB (14,310 words) - 05:36, 9 October 2024
trace quantities: technetium, atomic number 43; promethium, number 61; astatine, number 85; francium, number 87; neptunium, number 93; and plutonium, number...
74 KB (9,731 words) - 02:41, 13 September 2024
bismuth due to the short half-lives of the next two elements, polonium and astatine, which decay to bismuth or lead. The r-process is so fast it can skip this...
174 KB (14,172 words) - 13:27, 5 October 2024
tetrahalides with all halogens except astatine and forms dihalides with all halogens except bromine and astatine. Germanium bonds to all natural single...
32 KB (3,839 words) - 16:47, 5 October 2024
Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium...
81 KB (8,949 words) - 23:18, 10 October 2024
Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium...
95 KB (10,852 words) - 03:22, 27 July 2024
Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium...
141 KB (13,803 words) - 10:12, 6 October 2024
208Po can be made through the proton bombardment of 209Bi in a cyclotron. Astatine can also be produced by bombarding 209Bi with alpha particles. Traces of...
27 KB (2,406 words) - 23:31, 11 August 2024
Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium...
86 KB (10,696 words) - 03:20, 29 September 2024