Magnesium (12Mg) naturally occurs in three stable isotopes: 24 Mg, 25 Mg, and 26 Mg. There are 19 radioisotopes that have been discovered, ranging from 18 Mg to 40 Mg (with the exception of 39 Mg). The longest-lived radioisotope is 28 Mg with a half-life of 20.915(9) h. The lighter isotopes mostly decay to isotopes of sodium while the heavier isotopes decay to isotopes of aluminium. The shortest-lived is proton-unbound19 Mg with a half-life of 5(3) picoseconds, though the half-life of similarly unbound 18 Mg has not been measured.
^Prohaska, Thomas; Irrgeher, Johanna; Benefield, Jacqueline; et al. (2022-05-04). "Standard atomic weights of the elements 2021 (IUPAC Technical Report)". Pure and Applied Chemistry. doi:10.1515/pac-2019-0603. ISSN 1365-3075.
^Half-life, decay mode, nuclear spin, and isotopic composition is sourced in: Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). "The NUBASE2020 evaluation of nuclear properties" (PDF). Chinese Physics C. 45 (3): 030001. doi:10.1088/1674-1137/abddae.
^Wang, Meng; Huang, W.J.; Kondev, F.G.; Audi, G.; Naimi, S. (2021). "The AME 2020 atomic mass evaluation (II). Tables, graphs and references*". Chinese Physics C. 45 (3): 030003. doi:10.1088/1674-1137/abddaf.
^Jin, Y.; et al. (2021). "First observation of the four-proton unbound nucleus 18Mg". Physical Review Letters. 127 (262502). doi:10.1103/PhysRevLett.127.262502.
^Crawford, H. L.; Tripathi, V.; Allmond, J. M.; et al. (2022). "Crossing N = 28 toward the neutron drip line: first measurement of half-lives at FRIB". Physical Review Letters. 129 (212501). doi:10.1103/PhysRevLett.129.212501.
January 21, 2023
isotopes, magnesium, magnesium, 12mg, naturally, occurs, three, stable, isotopes, there, radioisotopes, that, have, been, discovered, ranging, from, with, exception, longest, lived, radioisotope, with, half, life, lighter, isotopes, mostly, decay, isotopes, so. Magnesium 12Mg naturally occurs in three stable isotopes 24 Mg 25 Mg and 26 Mg There are 19 radioisotopes that have been discovered ranging from 18 Mg to 40 Mg with the exception of 39 Mg The longest lived radioisotope is 28 Mg with a half life of 20 915 9 h The lighter isotopes mostly decay to isotopes of sodium while the heavier isotopes decay to isotopes of aluminium The shortest lived is proton unbound 19 Mg with a half life of 5 3 picoseconds though the half life of similarly unbound 18 Mg has not been measured Main isotopes of magnesium 12Mg Iso tope Decayabun dance half life t1 2 mode pro duct24Mg 79 0 stable25Mg 10 0 stable26Mg 11 0 stableStandard atomic weight Ar Mg 24 304 24 307 24 305 0 002 abridged 1 2 viewtalkedit The abundances of the naturally occurring isotopes of magnesium List of isotopes EditNuclide 3 Z N Isotopic mass Da 4 n 1 Half life n 2 Decaymode n 3 Daughterisotope n 4 Spin andparity n 5 n 2 Natural abundance mole fraction Normal proportion Range of variation18 Mg 5 12 6 2p 16 Ne 0 19 Mg 12 7 19 034180 60 5 3 ps 2p 17 Ne 1 2 20 Mg 12 8 20 0187631 20 90 4 5 ms b 69 7 1 2 20 Na 0 b p 30 3 1 2 19 Ne21 Mg 12 9 21 0117058 8 120 0 4 ms b 79 8 2 1 21 Na 5 2 b p 20 1 2 1 20 Neb a 0 116 18 17 Fb pa 0 016 3 17 N22 Mg 12 10 21 999570 60 17 3 8745 7 s b 22 Na 0 23 Mg 12 11 22 994123 77 3 11 3039 32 s b 23 Na 3 2 24 Mg 12 12 23 985041 689 14 Stable 0 0 7888 0 7905 25 Mg 12 13 24 985836 97 5 Stable 5 2 0 09988 0 10034 26 Mg n 6 12 14 25 982592 97 3 Stable 0 0 1096 0 1109 27 Mg 12 15 26 984340 65 5 9 435 27 min b 27 Al 1 2 28 Mg 12 16 27 983875 43 28 20 915 9 h b 28 Al 0 29 Mg 12 17 28 9886072 4 1 30 12 s b 29 Al 3 2 30 Mg 12 18 29 9904655 14 317 4 ms b gt 99 94 30 Al 0 b n lt 0 06 29 Al31 Mg 12 19 30 996648 3 270 2 ms b 93 8 1 9 31 Al 1 2 b n 6 2 1 9 30 Al32 Mg 12 20 31 999110 4 80 4 4 ms b 94 5 5 32 Al 0 b n 5 5 5 31 Al33 Mg 12 21 33 0053279 29 92 0 1 2 ms b 86 2 33 Al 3 2 b n 14 2 32 Alb 2n n 7 31 Al 34 Mg 12 22 34 008935 7 44 9 4 ms b gt 78 9 7 0 34 Al 0 b n 21 7 33 Alb 2n lt 0 1 32 Al35 Mg 12 23 35 01679 29 11 3 6 ms b n 52 46 34 Al 3 2 5 2 b 48 46 35 Alb 2n n 7 33 Al 36 Mg 12 24 36 02188 74 3 9 1 3 ms b 52 12 36 Al 0 b n 48 12 35 Alb 2n n 7 34 Al 37 Mg 12 25 37 03029 75 8 4 ms b n 7 37 Al 3 2 b n n 7 36 Al b 2n n 7 35 Al 38 Mg 12 26 38 03658 54 3 1 4 stat 2 sys ms 6 b n 81 37 Al 0 b 9 38 Alb 2n 9 36 Al40 Mg 12 28 40 05319 54 1 ms gt 170 ns b n 7 40 Al 0 b n n 7 39 Al b 2n n 7 38 Al This table header amp footer view Uncertainty 1s is given in concise form in parentheses after the corresponding last digits a b Values marked are not purely derived from experimental data but at least partly from trends of neighboring nuclides TNN Modes of decay n Neutron emissionp Proton emission Bold symbol as daughter Daughter product is stable spin value Indicates spin with weak assignment arguments Used in radiodating events early in the Solar System s history a b c d e f g h i Decay mode shown is energetically allowed but has not been experimentally observed to occur in this nuclide External links EditMagnesium isotopes data from The Berkeley Laboratory Isotopes Project sReferences Edit Standard Atomic Weights Magnesium CIAAW 2011 Prohaska Thomas Irrgeher Johanna Benefield Jacqueline et al 2022 05 04 Standard atomic weights of the elements 2021 IUPAC Technical Report Pure and Applied Chemistry doi 10 1515 pac 2019 0603 ISSN 1365 3075 Half life decay mode nuclear spin and isotopic composition is sourced in Kondev F G Wang M Huang W J Naimi S Audi G 2021 The NUBASE2020 evaluation of nuclear properties PDF Chinese Physics C 45 3 030001 doi 10 1088 1674 1137 abddae Wang Meng Huang W J Kondev F G Audi G Naimi S 2021 The AME 2020 atomic mass evaluation II Tables graphs and references Chinese Physics C 45 3 030003 doi 10 1088 1674 1137 abddaf Jin Y et al 2021 First observation of the four proton unbound nucleus 18Mg Physical Review Letters 127 262502 doi 10 1103 PhysRevLett 127 262502 Crawford H L Tripathi V Allmond J M et al 2022 Crossing N 28 toward the neutron drip line first measurement of half lives at FRIB Physical Review Letters 129 212501 doi 10 1103 PhysRevLett 129 212501 Retrieved from https en wikipedia org w index php title Isotopes of magnesium amp oldid 1133620316 Magnesium 24, wikipedia, wiki, book, books, library,
