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[2] [70] The island of stability for spherical nuclei may also be a "coral reef" (i.e., a broad region of increased stability without a clear "peak") around N = 184 and 114 ≤ Z ≤ 120, with half-lives rapidly decreasing at higher atomic number, due to combined effects from proton and neutron shell closures.
The island of stability is a region outside the valley of stability where it is predicted that a set of heavy isotopes with near magic numbers of protons and neutrons will locally reverse the trend of decreasing stability in elements heavier than uranium.
The island of stability is a hypothetical region in the top right cluster of nuclides that contains isotopes far more stable than other transuranic elements. There are no stable nuclides having an equal number of protons and neutrons in their nuclei with atomic number greater than 20 (i.e. calcium) as can be readily observed from the chart ...
Islands of stability are predicted to center near 294 Ds and 354 126, beyond which the model appears to deviate from several rules of the semi-empirical mass formula. [ 8 ] The general patterns of beta-stability are expected to continue into the region of superheavy elements , though the exact location of the center of the valley of stability ...
842 × 431 (2.28 MB) Kylegodbey: I have updated the proton numbers along the Z axis to address the issue brought forth on the talk page. See the issue here: w:Talk:Island of stability #The diagram in the beginning of the article has wrong numbers in the Z(proton number) axis: 17:07, 23 June 2012: 842 × 431 (1.93 MB) InvaderXan
Transuranic elements are difficult and expensive to produce, and their prices increase rapidly with atomic number. As of 2008, the cost of weapons-grade plutonium was around $4,000/gram, [2] and californium exceeded $60,000,000/gram. [3] Einsteinium is the heaviest element that has been produced in macroscopic quantities. [4]
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The shaded region is the continent of stability. [1] The boundary to the continent of stability is determined by the situations where the Coulomb energy due to electric charge overcomes the binding energy, or where decay into atomic nuclei results in lower energy. The lowest energy mass number is proportional to the cube of the charge (atomic ...