Isotopes of scandium

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Although scandium (Sc) has multiple isotopes, only one of these isotopes is stable; as such, it is considered a monoisotopic element.
Standard atomic mass: 44.955912(6) u

[edit] Table

nuclide
symbol
Z(p) N(n)  
isotopic mass (u)
 
half-life nuclear
spin
representative
isotopic
composition
(mole fraction)
range of natural
variation
(mole fraction)
excitation energy
36Sc 21 15 36.01492(54)#
37Sc 21 16 37.00305(32)# 7/2-#
38Sc 21 17 37.99470(32)# <300 ns (2-)#
39Sc 21 18 38.984790(26) <300 ns (7/2-)#
40Sc 21 19 39.977967(3) 182.3(7) ms 4-
41Sc 21 20 40.96925113(24) 596.3(17) ms 7/2-
42Sc 21 21 41.96551643(29) 681.3(7) ms 0+
42mSc 616.28(6) keV 61.7(4) s (7,5,6)+
43Sc 21 22 42.9611507(20) 3.891(12) h 7/2-
43m1Sc 151.4(2) keV 438(7) µs 3/2+
43m2Sc 3123.2(3) keV 470(4) ns (19/2)-
44Sc 21 23 43.9594028(19) 3.97(4) h 2+
44m1Sc 67.8680(14) keV 154.2(8) ns 1-
44m2Sc 270.95(20) keV 58.61(10) h 6+
44m3Sc 146.224(22) keV 50.4(7) µs 0-
45Sc 21 24 44.9559119(9) STABLE 7/2- 1.0000
45mSc 12.40(5) keV 318(7) ms 3/2+
46Sc 21 25 45.9551719(9) 83.79(4) d 4+
46m1Sc 52.011(1) keV 9.4(8) µs 6+
46m2Sc 142.528(7) keV 18.75(4) s 1-
47Sc 21 26 46.9524075(22) 3.3492(6) d 7/2-
47mSc 766.83(9) keV 272(8) ns (3/2)+
48Sc 21 27 47.952231(6) 43.67(9) h 6+
49Sc 21 28 48.950024(4) 57.2(2) min 7/2-
50Sc 21 29 49.952188(17) 102.5(5) s 5+
50mSc 256.895(10) keV 350(40) ms 2+,3+
51Sc 21 30 50.953603(22) 12.4(1) s (7/2)-
52Sc 21 31 51.95668(21) 8.2(2) s 3(+)
53Sc 21 32 52.95961(32)# >3 s (7/2-)#
54Sc 21 33 53.96326(40) 260(30) ms 3+#
54mSc 110(3) keV 7(5) µs (5+)
55Sc 21 34 54.96824(79) 0.115(15) s 7/2-#
56Sc 21 35 55.97287(75)# 35(5) ms (1+)
57Sc 21 36 56.97779(75)# 13(4) ms 7/2-#
58Sc 21 37 57.98371(86)# 12(5) ms (3+)#
59Sc 21 38 58.98922(97)# 10# ms 7/2-#
60Sc 21 39 59.99571(97)# 3# ms 3+#

[edit] Notes

  • Values marked # are not purely derived from experimental data, but at least partly from systematic trends. Spins with weak assignment arguments are enclosed in parentheses.
  • Uncertainties are given in concise form in parentheses after the corresponding last digits. Uncertainty values denote one standard deviation, except isotopic composition and standard atomic mass from IUPAC which use expanded uncertainties.

[edit] References


Isotopes of calcium Isotopes of scandium Isotopes of titanium
Index to isotope pages