|
Ununtrium (Uut) has no stable isotopes. A standard atomic mass cannot be given. General Name, Symbol, Number ununtrium, Uut, 113 Chemical series presumably poor metals Group, Period, Block 13, 7, p Appearance unknown, probably silvery white or metallic gray Atomic mass (284) g/mol Electron configuration perhaps [Rn] 5f14 6d10 7s2 7p1 (guess based on thallium) Electrons per shell 2, 8, 18, 32...
Table nuclide
symbol | Z(p) | N(n) |
isotopic mass (u)
| half-life | nuclear
spin | representative
isotopic
composition
(mole fraction) | range of natural
variation
(mole fraction) | | excitation energy | | Uut-278 | 113 | 165 | | | | | | | Uut-283 | 113 | 170 | 283.17645(78)# | 100(+490-45) ms | | | | | Uut-284 | 113 | 171 | 284.17808(86)# | 0.48(+58-17) s | | | | | Uut-285 | 113 | 172 | 285.17873(105)# | 2# min | | | | | Uut-286 | 113 | 173 | 286.18048(101)# | 5# min | | | | | Uut-287 | 113 | 174 | 287.18105(90)# | 20# min | | | | Properties [1][2] In physics, the proton (Greek proton = first) is a subatomic particle with an electric charge of one positive fundamental unit (1. ...
This article or section does not cite its references or sources. ...
Notes - Values marked # are not purely derived from experimental data, but at least partly from systematic trends. Spins with weak assignment arguments are enclosed in parentheses.
- Uncertainties are given in concise form in parentheses after the corresponding last digits. Uncertainty values denote one standard deviation, except isotopic composition and standard atomic mass from IUPAC which use expanded uncertainties.
References - Isotope masses from Ame2003 Atomic Mass Evaluation by G. Audi, A.H. Wapstra, C. Thibault, J. Blachot and O. Bersillon in Nuclear Physics A729 (2003).
- Isotopic compositions and standard atomic masses from Atomic weights of the elements. Review 2000 (IUPAC Technical Report). Pure Appl. Chem. Vol. 75, No. 6, pp. 683-800, (2003) and Atomic Weights Revised (2005).
- Half-life, spin, and isomer data selected from these sources. Editing notes on this article's talk page.
- Audi, Bersillon, Blachot, Wapstra. The Nubase2003 evaluation of nuclear and decay properties, Nuc. Phys. A 729, pp. 3-128 (2003).
- National Nuclear Data Center, Brookhaven National Laboratory. Information extracted from the NuDat 2.1 database (retrieved Sept. 2005).
- David R. Lide (ed.), Norman E. Holden in CRC Handbook of Chemistry and Physics, 85th Edition, online version. CRC Press. Boca Raton, Florida (2005). Section 11, Table of the Isotopes.
|
Feeds |
Contact