Isotopes of Magnesium (Z=12)

Click on an isotope to get more information about its decay
Isotope Half-life Spin Parity Decay Mode(s) or Abundance
20Mg 95 ms 0+ %EC+%B+=100, %ECP ~ 3
21Mg 122 ms(3/2,5/2)+ %EC+%B+=100 , %ECP=29.3
22Mg 3.857 s0+ %EC+%B+=100
23Mg 11.317 s 3/2+ %EC+%B+=100
24Mg stable 0+ %Abundance=78.99 3
25Mg stable 5/2+ %Abundance=10.00 1
26Mg stable 0+ %Abundance=11.01 2
27Mg 9.458 m1/2+ %B-=100
28Mg 20.91 h0+ %B-=100
29Mg 1.30 s3/2+ %B-=100
30Mg 335 ms0+ %B-=100
31Mg 230 ms %B-=100 , %B-N=1.7 3
32Mg 120 ms0+ %B-=100 , %B-N=2.4 5
33Mg 90 ms %B-=100, %B-N=17 5
34Mg 20 ms 0+ %B-=100, %B-N=?
35Mg
36Mg 0+
37Mg
Isotope Explorer Nuclear Structure and Decay Data
8th Edition of the Table of Isotopes
Isotopes Project Home Page
Lawrence Berkeley National Laboratory
Return to Exploring the Isotopes