Die chemiese element hassium (Hs), met ’n atoommassa van ongeveer 269 u, het geen stabiele isotope nie en word dus as ’n radioaktiewe element geklassifiseer. Die 12 isotope is onstabiel en het ’n relatief kort halfleeftyd (die meeste minder as ’n sekonde).
In die natuur kom geen hassium voor nie; alle isotope is sinteties in ’n laboratorium berei. Die eerste sintetiese isotoop was 265Hs, in 1984.
Die kortslewende isotoop van hassium is 264Hs, met ’n halfleeftyd van ongeveer 540 mikrosekondes. Die langslewende een is 269Hs, met ’n halfleeftyd van 9,6 sekondes.
| Nuklied | Z (p) | N (n) | Isotopiese massa (u) | Halfleeftyd | Radioaktiewe verval | VP | Kernspin |
|---|---|---|---|---|---|---|---|
| Opwekkingsenergie | |||||||
| 263Hs | 108 | 155 | 263,12856(37) | 1 ms | α | 259Sg | 7/2+ |
| 264Hs | 108 | 156 | 264,12839(5) | 540(300) µs | α (50%) | 260Sg | 0+ |
| SS (50%) | |||||||
| 265Hs | 108 | 157 | 265,13009(15) | 2,1(3) ms | α | 261Sg | 9/2+ |
| 265mHs | 300(70) keV | 0,780 ms | α | 261Sg | 3/2+ | ||
| 266Hs | 108 | 158 | 266,13010(31) | 2,7(10) ms | α | 262Sg | 0+ |
| 267Hs | 108 | 159 | 267,13179(11) | 52 ms | α | 263Sg | 3/2+ |
| 267mHs | α | 263Sg | |||||
| 268Hs | 108 | 160 | 268,13216(44) | 2 s | α | 264Sg | 0+ |
| 269Hs | 108 | 161 | 269,13406(13) | 9,7 s | α | 265Sg | |
| 269mHs | α | 265Sg | |||||
| 270Hs | 108 | 162 | 270,13465(31) | 3,6 s | α | 266Sg | 0+ |
| 271Hs | 108 | 163 | 271,13766(36) | 40 s | α | 267Sg | |
| 273Hs | 108 | 165 | 273,14199(89) | 240 ms | α | 269Sg | (3/2+) |
| 275Hs | 108 | 167 | 275,14595(77) | 0,15 s | α | 271Sg | |
| 277Hs | 108 | 169 | 277,14984(78) | SS | 3/2+ | ||
| 277mHs | 40(30) min | SS | |||||
| 1H | 2He | 3Li | 4Be | 5B | 6C | 7N | 8O | 9F | 10Ne | 11Na | 12Mg | 13Al | 14Si | 15P | 16S | 17Cl | 18Ar | 19K | |
| 20Ca | 21Sc | 22Ti | 23V | 24Cr | 25Mn | 26Fe | 27Co | 28Ni | 29Cu | 30Zn | 31Ga | 32Ge | 33As | 34Se | 35Br | 36Kr | 37Rb | 38Sr | 39Y |
| 40Zr | 41Nb | 42Mo | 43Tc | 44Ru | 45Rh | 46Pd | 47Ag | 48Cd | 49In | 50Sn | 51Sb | 52Te | 53I | 54Xe | 55Cs | 56Ba | 57La | 58Ce | 59Pr |
| 60Nd | 61Pm | 62Sm | 63Eu | 64Gd | 65Tb | 66Dy | 67Ho | 68Er | 69Tm | 70Yb | 71Lu | 72Hf | 73Ta | 74W | 75Re | 76Os | 77Ir | 78Pt | 79Au |
| 80Hg | 81Tl | 82Pb | 83Bi | 84Po | 85At | 86Rn | 87Fr | 88Ra | 89Ac | 90Th | 91Pa | 92U | 93Np | 94Pu | 95Am | 96Cm | 97Bk | 98Cf | 99Es |
| 100Fm | 101Md | 102No | 103Lr | 104Rf | 105Db | 106Sg | 107Bh | 108Hs | 109Mt | 110Ds | 111Rg | 112Cn | 113Nh | 114Fl | 115Mc | 116Lv | 117Ts | 118Og |
- R.B. Firestone, S.Y. Frank Chu & C.M. Baglin (1999) - Table of Isotopes (aanlyn weergawe van die CD-ROM)
- G. Audi, A.H. Wapstra, C. Thibault, J. Blachot & O. Bersillon (2003) - The NUBASE evaluation of nuclear and decay properties, Nuclear Physics A, 729, pp. 3-128
- J.R. de Laeter, J.K. Böhlke, P. De Bièvre, H. Hidaka, H.S. Peiser, K.J.R. Rosman & P.D.P. Taylor (2003) - Atomic weights of the elements. Review 2000 (IUPAC Technical Report), Pure and Applied Chemistry, 75 (6), pp. 683–800
- M.E. Wieser (2006) - Atomic weights of the elements 2005 (IUPAC Technical Report), Pure and Applied Chemistry, 78 (11), pp. 2051–2066
- David R. Lide (2004) - CRC Handbook of Chemistry and Physics (85ste uitg.), hoofstuk 11, CRC Press - ISBN 978-0849304859
Hierdie artikel is vertaal uit die Nederlandse Wikipedia
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