Isotopes of Potassium (K)

Symbol Mass Number Relative Atomic Mass Isotopic Composition
32K 32 32.02192(54)#
33K 33 33.00726(21)#
34K 34 33.99841(32)#
35K 35 34.988010(21)
36K 36 35.981292(8)
37K 37 36.97337589(10)
38K 38 37.9690812(5)
39K 39 38.96370668(20) 0.932581(44)
40K 40 39.96399848(21) 0.000117(1)
41K 41 40.96182576(21) 0.067302(44)
42K 42 41.96240281(24)
43K 43 42.960716(10)
44K 44 43.961560(40)
45K 45 44.960699(11)
46K 46 45.961977(17)
47K 47 46.961678(9)
48K 48 47.965514(26)
49K 49 48.967450(80)
50K 50 49.97278(30)
51K 51 50.97638(54)#
52K 52 51.98261(75)#
53K 53 52.98712(75)#
54K 54 53.99420(97)#
55K 55 54.99971(107)#

Legend

Mass Number
Relative Atomic Mass
Isotopic Composition
Standard Atomic Weight
K: 39.0983(1)

Isotopic Composition