Iron/Isotopes

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More information on the different isotopes of Iron.
Isotopes of Iron and Their Properties
Isotope Half-life Spin Abundance (%)
45Fe
46Fe 20 ms 0+
47Fe 27 ms
48Fe 44 ms 0+
49Fe 70 ms (7/2-)
50Fe 150 ms 0+
51Fe 305 ms 5/2-
52Fe 8.275 h 0+
52m1Fe 45.9 s (12+)
53Fe 8.51 m 7/2-
53m1Fe 2.58 m 19/2-
54Fe stable 0+ 5.8 1
55Fe 2.73 y 3/2-
56Fe stable 0+ 91.72 30
57Fe stable 1/2- 2.2 1
58Fe stable 0+ 0.28 1
59Fe 44.503 d 3/2-
60Fe 1.5e+6 y 0+
61Fe 5.98 m 3/2-,5/2-
62Fe 68 s 0+
63Fe 6.1 s (5/2)-
64Fe 2.0 s 0+
65Fe 0.4 s
66Fe 440 ms 0+
67Fe 470 ms (1/2-)
68Fe 0.10 s 0+
69Fe (1/2-)
70Fe 0+
71Fe (7/2+)
72Fe 0+

Adapted from The Berkeley Laboratory Isotopes Project (http://ie.lbl.gov/education/parent/Fe_iso.htm)