Mg

Magnesium

Z 12 24.305 g/molAlkaline Earth Metal

Overview Atomic Properties Thermodynamics Electromagnetism Isotopes


²⁴Mg	12	23.985	-13,933.578	78.965%	Stable	0+	---	1920
²⁶Mg	14	25.9826	-16,214.544	11.025%	Stable	0+	---	1920
²⁵Mg	13	24.9858	-13,192.78	10.011%	Stable	5/2+	---	1920
¹⁹Mg	7	19.0342	31,840.0	---	5.0 ps	(1/2-)	p¹⁷Ne(100%)	2007
²⁰Mg	8	20.0188	17,477.7	---	90.4 ms	0+	β⁺²⁰Na(69.7%) β⁺p¹⁹Ne(30.3%)	1974
²¹Mg	9	21.0117	10,903.9	---	120.0 ms	5/2+	β⁺²¹Na(79.768%) β⁺p²⁰Ne(20.1%) β⁺α¹⁷F(0.116%) β⁺pα(0.016%)	1963
²²Mg	10	21.9996	-399.99	---	3.87 s	0+	β⁺²²Na(100%)	1961
²³Mg	11	22.9941	-5,473.67	---	11.3 s	3/2+	β⁺²³Na(100%)	1939
²⁷Mg	15	26.9843	-14,586.59	---	9.44 m	1/2+	β⁻²⁷Al(100%)	1934
²⁸Mg	16	27.9839	-15,019.95	---	20.92 h	0+	β⁻²⁸Al(100%)	1953
²⁹Mg	17	28.9886	-10,612.4	---	1.3 s	3/2+	β⁻²⁹Al(100%)	1971
³⁰Mg	18	29.9905	-8,881.4	---	317.0 ms	0+	β⁻³⁰Al(~100%) β⁻n²⁹Al(<0.06%)	1971
³¹Mg	19	30.9966	-3,122.0	---	270.0 ms	1/2+	β⁻³¹Al(93.8%) β⁻n³⁰Al(6.2%)	1977
³²Mg	20	31.9991	-829.0	---	80.4 ms	0+	β⁻³²Al(94.5%) β⁻n³¹Al(5.5%)	1977
³³Mg	21	33.0053	4,962.9	---	92.0 ms	3/2-	β⁻³³Al(86%) β⁻n³²Al(14%) β⁻n³¹Al	1979
³⁴Mg	22	34.0089	8,323.0	---	44.9 ms	0+	β⁻³⁴Al(79%) β⁻n³³Al(21%) β⁻n³²Al(<0.1%)	1979
³⁵Mg	23	35.0168	15,640.0	---	11.3 ms	(3/2-)	β⁻n³⁴Al(52%) β⁻³⁵Al(48%) β⁻n³³Al	1989
³⁶Mg	24	36.0219	20,380.0	---	3.9 ms	0+	β⁻³⁶Al(52%) β⁻n³⁵Al(48%) β⁻n³⁴Al	1989
³⁷Mg	25	37.0303	28,210.0	---	8.0 ms	(3/2-)	β⁻³⁷Al β⁻n³⁶Al β⁻n³⁵Al	1996
³⁸Mg	26	38.0366	34,070.0	---	2.0 ms	0+	β⁻³⁸Al(100%) β⁻n³⁷Al β⁻n³⁶Al	1997
³⁹Mg	27	39.0459	42,780.0	---	---	(7/2-)	n³⁸Mg β⁻³⁹Al	---
⁴⁰Mg	28	40.0532	49,550.0	---	1.0 ms	0+	β⁻⁴⁰Al β⁻n³⁹Al β⁻n³⁸Al	2007
⁴¹Mg	29	41.0624	58,100.0	---	---	(3/2-)	β⁻⁴¹Al β⁻n⁴⁰Al	---