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Isotopes of ununseptium
Ununseptium (Uus) has not yet been synthesized; all data are theoretical. It has no stable isotopes. A standard atomic mass cannot be given.
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 |
| 291Uus |
117 |
174 |
291.20656(95)# |
|
|
|
|
| 292Uus |
117 |
175 |
292.20755(101)# |
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Notes
- Values marked # are not purely derived from experimental data, but at least partly from systematic trends.
- Uncertainties are given in concise form in parentheses after the corresponding last digits. Uncertainty values from Ame2003 denote one standard deviation. Values from IUPAC are 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).
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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Isotopes_of_ununseptium". A list of authors is available in Wikipedia.
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