Unbiseptium
Unbiseptium /ˌuːnbaɪˈsɛptiəm/, also called eka-americium,[source?] is the hypothetical chemical element with atomic number 127 and symbol Ubs. It comes immediately after unbihexium, element 126, which is expected to be the most stable element on an island of stability.[1]
Naming
The name unbiseptium is a systematic element name, used as a placeholder until its discovery is confirmed. Transuranium elements beyond californium are always created artificially, and the element usually ends up being named for a scientist or a laboratory that does work in atomic physics.[source?]
Synthesis of unbiseptium
Unbiseptium has had one failed attempt at synthesis in 1978 at the Darmstadt UNILAC accelerator by bombarding a natural tantalum target with xenon ions.[1]
Unbiseptium Media
Pekka Pyykkö's 172-element (extended) periodic table.
Kulsha's first suggested form
Kulsha's second suggested form
Energy eigenvalues (in eV) for the outermost electrons of elements with Z = 100 through 172, predicted using Dirac–Fock calculations. The − and + signs refer to orbitals with decreased or increased azimuthal quantum number from spin–orbit splitting respectively: p− is p1/2, p+ is p3/2, d− is d3/2, d+ is d5/2, f− is f5/2, f+ is f7/2, g− is g7/2, and g+ is g9/2.
Energy eigenvalues for the 1s, 2s, 2p1/2 and 2p3/2 shells from solutions of the Dirac equation (taking into account the finite size of the nucleus) for Z = 135–175 (–·–), for the Thomas-Fermi potential (—) and for Z = 160–170 with the self-consistent potential (---).
Related pages
References
- ↑ 1.0 1.1 Emsley, John (2011). Nature's Building Blocks: An A-Z Guide to the Elements (New ed.). New York, NY: Oxford University Press. p. 593. ISBN 978-0-19-960563-7.
Template:Extended periodic table (by Fricke, 32 columns, compact)