Isotop magnesium

Magnesium (₁₂Mg) secara alami terdapat dalam tiga isotop stabil, ²⁴Mg, ²⁵Mg, dan ²⁶Mg. Ada 19 radioisotop yang telah ditemukan, mulai dari ¹⁸Mg hingga ⁴⁰Mg. Radioisotop yang berumur paling panjang adalah ²⁸Mg dengan waktu paruh 20,915 jam. Isotop yang lebih ringan sebagian besar meluruh menjadi isotop natrium sedangkan isotop yang lebih berat meluruh menjadi isotop aluminium. Radioisotop yang berumur paling pendek adalah ¹⁹Mg yang tidak terikat proton dengan waktu paruh 5 pikodetik, meskipun waktu paruh ¹⁸Mg yang sama-sama tidak terikat belum terukur.

Daftar isotop

|- | ¹⁸Mg^[1] | style="text-align:right" | 12 | style="text-align:right" | 6 | | | 2p | ¹⁶Ne | 0+ | | |- | ¹⁹Mg | style="text-align:right" | 12 | style="text-align:right" | 7 | 19,03417(5) | 5(3) pdtk | 2p | ¹⁷Ne | 1/2−# | | |- | rowspan=2|²⁰Mg | rowspan=2 style="text-align:right" | 12 | rowspan=2 style="text-align:right" | 8 | rowspan=2|20,0187631(2) | rowspan=2|93(5) mdtk | β⁺ (69,7%) | ²⁰Na | rowspan=2|0+ | rowspan=2| | rowspan=2| |- | β⁺, p (30,3%) | ¹⁹Ne |- | rowspan=3|²¹Mg | rowspan=3 style="text-align:right" | 12 | rowspan=3 style="text-align:right" | 9 | rowspan=3|21,0117058(8) | rowspan=3|118,6(5) mdtk | β⁺ (66,9%) | ²¹Na | rowspan=3|5/2+ | rowspan=3| | rowspan=3| |- | β⁺, p (32,6%) | ²⁰Ne |- | β⁺, α (0,5%) | ¹⁷F |- | ²²Mg | style="text-align:right" | 12 | style="text-align:right" | 10 | 21,9995707(3) | 3,8755(12) dtk | β⁺ | ²²Na | 0+ | | |- | ²³Mg | style="text-align:right" | 12 | style="text-align:right" | 11 | 22,99412394(17) | 11,317(11) dtk | β⁺ | ²³Na | 3/2+ | | |- | ²⁴Mg | style="text-align:right" | 12 | style="text-align:right" | 12 | 23,985041697(14) | colspan=3 align=center|Stabil | 0+ | 0,7899(4) | 0,78958–0.79017 |- | ²⁵Mg | style="text-align:right" | 12 | style="text-align:right" | 13 | 24,98583696(5) | colspan=3 align=center|Stabil | 5/2+ | 0,1000(1) | 0,09996–0,10012 |- | ²⁶Mg^[2] | style="text-align:right" | 12 | style="text-align:right" | 14 | 25,98259297(3) | colspan=3 align=center|Stabil | 0+ | 0,1101(3) | 0,10987–0,11030 |- | ²⁷Mg | style="text-align:right" | 12 | style="text-align:right" | 15 | 26,98434063(5) | 9,435(27) mnt | β⁻ | ²⁷Al | 1/2+ | | |- | ²⁸Mg | style="text-align:right" | 12 | style="text-align:right" | 16 | 27,9838766(21) | 20,915(9) jam | β⁻ | ²⁸Al | 0+ | | |- | ²⁹Mg | style="text-align:right" | 12 | style="text-align:right" | 17 | 28,988617(12) | 1,30(12) dtk | β⁻ | ²⁹Al | 3/2+ | | |- | rowspan=2|³⁰Mg | rowspan=2 style="text-align:right" | 12 | rowspan=2 style="text-align:right" | 18 | rowspan=2|29,990463(4) | rowspan=2|313(4) mdtk | β⁻ (99,94%) | ³⁰Al | rowspan=2|0+ | rowspan=2| | rowspan=2| |- | β⁻, n (0.06%) | ²⁹Al |- | rowspan=2|³¹Mg | rowspan=2 style="text-align:right" | 12 | rowspan=2 style="text-align:right" | 19 | rowspan=2|30,996648(3) | rowspan=2|236(20) mdtk | β⁻ (93,8%) | ³¹Al | rowspan=2|1/2(+) | rowspan=2| | rowspan=2| |- | β⁻, n (6,2%) | ³⁰Al |- | rowspan=2|³²Mg | rowspan=2 style="text-align:right" | 12 | rowspan=2 style="text-align:right" | 20 | rowspan=2|31,999110(4) | rowspan=2|86(5) mdtk | β⁻ (94,5%) | ³²Al | rowspan=2|0+ | rowspan=2| | rowspan=2| |- | β⁻, n (5,5%) | ³¹Al |- | rowspan=2|³³Mg | rowspan=2 style="text-align:right" | 12 | rowspan=2 style="text-align:right" | 21 | rowspan=2|33,005327(3) | rowspan=2|90,5(16) mdtk | β⁻ (86%) | ³³Al | rowspan=2|3/2− | rowspan=2| | rowspan=2| |- | β⁻, n (14%) | ³²Al |- | rowspan=2|³⁴Mg | rowspan=2 style="text-align:right" | 12 | rowspan=2 style="text-align:right" | 22 | rowspan=2|34,00894(3) | rowspan=2|20(10) mdtk | β⁻ (70%) | ³⁴Al | rowspan=2|0+ | rowspan=2| | rowspan=2| |- | β⁻, n (30%) | ³³Al |- | rowspan=2|³⁵Mg | rowspan=2 style="text-align:right" | 12 | rowspan=2 style="text-align:right" | 23 | rowspan=2|35,01679(29) | rowspan=2|70(40) mdtk | β⁻, n (52%) | ³⁴Al | rowspan=2|7/2−# | rowspan=2| | rowspan=2| |- | β⁻ (48%) | ³⁵Al |- | ³⁶Mg | style="text-align:right" | 12 | style="text-align:right" | 24 | 36,02188(74) | 3,9(13) mdtk | β⁻ | ³⁶Al | 0+ | | |- | rowspan=2|³⁷Mg | rowspan=2 style="text-align:right" | 12 | rowspan=2 style="text-align:right" | 25 | rowspan=2|37,03029(75) | rowspan=2|8(4) mdtk | β⁻ | ³⁷Al | rowspan=2|(3/2−) | rowspan=2| | rowspan=2| |- | β⁻, n | ³⁶Al |- | ³⁸Mg | style="text-align:right" | 12 | style="text-align:right" | 26 | 38.03658(54)# | 1# mdtk [>260 ndtk] | | | 0+ | |

|- | rowspan=2|⁴⁰Mg | rowspan=2 style="text-align:right" | 12 | rowspan=2 style="text-align:right" | 28 | rowspan=2|40,05191(54)# | rowspan=2|1# mdtk | β⁻, n | ³⁹Al | rowspan=2|0+ | rowspan=2| | rowspan=2| |- | β⁻ | ⁴⁰Al

Pranala luar

Data isotop magnesium dari The Berkeley Laboratory Isotopes Project's

Referensi

↑ Y. Jin. First observation of the four-proton unbound nucleus 18 Mg. Physical Review Letters. 2021. Vol. 127. doi:10.1103/PhysRevLett.127.262502.
↑ Digunakan dalam penanggalan radio untuk awal sejarah Tata Surya

Sumber dan atribusi

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[1] Y. Jin. First observation of the four-proton unbound nucleus 18 Mg. Physical Review Letters. 2021. Vol. 127. doi:10.1103/PhysRevLett.127.262502.

[2] Digunakan dalam penanggalan radio untuk awal sejarah Tata Surya

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