in periodic table where 130th element located
Answers
Answer:
Explanation:
Untrinilium, Utn, is the temporary name for element 130. Isotopes are predicted within the bands Utn 438 to Utn 375, Utn 369 to Utn 355, and Utn 317 to Utn 299. There may be isotopes in the band from the neutron dripline to Utn 439, but it is not possible to predict which ones are possible. Reported half-lives are all less than 1 hr, and most are under 1 sec. Sixty one isotopes within the bands Utn 438 to Utn 423 (even-N only), Utn 422 to Utn 371, and Utn 362 are predicted to form. All Utn isotopes, predicted or guessed, will last less than 1000 sec after the event which led to their formation.
NUCLEAR PROPERTIES
INFORMATION SOURCES
While studies addressing specific issues have been carried out to very high N(1). and to moderate Z(2), (Z,N) or (Z,A) maps predicting half-lives and decay modes are almost completely limited to the region below Z = 130 and N = 220. There appears to be only one such map which extends beyond that region and is accessible(3).
(Z,N) maps for half-life and decay mode in Ref. 3 extend as high as Z = 175 and N = 333. Half-lives are reported as bands 3 orders of magnitude wide (0.001 - 1 sec, for example), and should be considered accurate only to within +/- orders of magnitude (presumably from band center. (A nuclide reported to be in the 0.001 - 1 sec band should be considered to have a possible half-life between 10^-4.5 sec and 10^1.5 sec.) Decay modes are limited alpha emission, beta emission, proton emission, and fission; and to the principal one for each nuclide. There are areas where two modes (or more) may be important, meaning that small uncertainties is model parameters could have produced different results. It is also possible that cluster decay may become important above the neutron shell closures at N = 228 and 308.
Ref. 3 does have two significant weakness in the way data are presented. Nuclides which are beta-stable are identified by black squares, overwriting decay mode and half-life information. In addition, nuclides having half-lives less than 10^-09 sec are not reported, which obscures the distinction between nuclides having half-lives in the 10^-09 and 10^-14 sec band and nuclear drops whose half-life is under 10^-14 sec.