Isotopes of Potassium (Z=19)

Click on an isotope to get more information about its decay
Isotope Half-life Spin Parity Decay Mode(s) or Abundance
32K
33K
34K
35K 190 ms 3/2+ %EC+%B+=100, %ECP=0.37 15
36K 342 ms 2+ %EC+%B+=100, %ECP=0.048 14, %ECA=0.0034 13
37K 1.226 s 3/2+ %EC+%B+=100
38K 7.636 m 3+ %EC+%B+=100
38m1K 923.9 ms 0+ %EC+%B+=100
39K stable 3/2+ %Abundance=93.2581 44
40K 1.277e+9 y 4- %Abundance=0.0117 1, %B-=89.28 13, %EC+%B+=10.72 13
41K stable 3/2+ %Abundance=6.7302 44
42K 12.360 h 2- %B-=100
43K 22.3 h 3/2+ %B-=100
44K 22.13 m 2- %B-=100
45K 17.3 m3/2+ %B-=100
46K 105 s (2-) %B-=100
47K 17.50 s1/2+ %B-=100
48K 6.8 s(2-) %B-=100, %B-N=1.14 15
49K 1.26 s (3/2+) %B-=100, %B-N=86 9
50K 472 ms(0-,1,2-) %B-=100, %B-N=29 3
51K 365 ms(1/2+,3/2+) %B-=100 , %B-N=47 5
52K 105 ms %B-=100, %B-N=91 9
53K 30 ms(3/2+) %B-=100, %B-N=85 15
54K 10 ms %B-=100, %B-N=?
55K
Isotope Explorer Nuclear Structure and Decay Data
8th Edition of the Table of Isotopes
Isotopes Project Home Page
Lawrence Berkeley National Laboratory
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