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Die chemiese element nihonium (Nh), met ’n atoommassa van ongeveer 287 u, het geen stabiele isotope nie en word dus as ’n radioaktiewe element beskou. Die ses isotope is onstabiel en het ’n relatief kort halfleeftyd (die meeste minder as ’n sekonde).
In die natuur kom geen nihonium voor nie; alle isotope is sinteties in ’n laboratorium berei. Die eerste sintetiese isotoop was 284Nh, in 2003.
Die kortslewende isotoop van nihonium is 278Nh, met ’n halfleeftyd van ongeveer 340 mikrosekondes. Die langslewende een is 286Nh, met ’n halfleeftyd van 19,6 sekondes.
Nuklied | Z (p) | N (n) | Isotopiese massa (u) | Halfleeftyd | Radioaktiewe verval | VP | Kernspin |
---|---|---|---|---|---|---|---|
278Nh | 113 | 165 | 340 µs | α | 274Rg | ||
282Nh | 113 | 169 | 73 ms | α | 278Rg | ||
283Nh | 113 | 170 | 283,17645(78) | 100 ms | α | 279Rg | |
284Nh | 113 | 171 | 284,17808(86) | 0,48 s | α | 280Rg | |
285Nh | 113 | 172 | 285,17873(105) | 5,5 s | α | 281Rg | |
286Nh | 113 | 173 | 286,18048(101) | 19,6 s | α | 282Rg |
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 |
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