Isotopes of scandium
List of isotopes
Bold for stable isotopes, bold italic for nearly-stable isotopes (half-life longer than the age of the universe)

Isotopes of scandium

Section Title: List of isotopes
Table Section Text: Bold for stable isotopes, bold italic for nearly-stable isotopes (half-life longer than the age of the universe)

nuclide symbol	Z(p)	N(n)	isotopic mass (u)	half-life	decay mode(s)	daughter isotope(s)	nuclear spin and parity	representative isotopic composition (mole fraction)	range of natural variation (mole fraction)

excitation energy

39Sc	21	18	38.984790(26)	<300 ns	p	38Ca	(7/2−)#

40Sc	21	19	39.977967(3)	182.3(7) ms	β+ (99.54%)	40Ca	4-

β+, p (.44%)	39K

β+, α (.017%)	36Ar

41Sc	21	20	40.96925113(24)	596.3(17) ms	β+	41Ca	7/2−

42Sc	21	21	41.96551643(29)	681.3(7) ms	β+	42Ca	0+

42mSc	616.28(6) keV	61.7(4) s	β+	42Ca	(7,5,6)+

43Sc	21	22	42.9611507(20)	3.891(12) h	β+	43Ca	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	β+	44Ca	2+

44m1Sc	67.8680(14) keV	154.2(8) ns	1−

44m2Sc	270.95(20) keV	58.61(10) h	IT (98.8%)	44Sc	6+

β+ (1.2%)	44Ca

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	IT	45Sc	3/2+

46Sc	21	25	45.9551719(9)	83.79(4) d	β−	46Ti	4+

46m1Sc	52.011(1) keV	9.4(8) µs	6+

46m2Sc	142.528(7) keV	18.75(4) s	IT	46Sc	1−

47Sc	21	26	46.9524075(22)	3.3492(6) d	β−	47Ti	7/2−

47mSc	766.83(9) keV	272(8) ns	(3/2)+

48Sc	21	27	47.952231(6)	43.67(9) h	β−	48Ti	6+

49Sc	21	28	48.950024(4)	57.2(2) min	β−	49Ti	7/2−

50Sc	21	29	49.952188(17)	102.5(5) s	β−	50Ti	5+

50mSc	256.895(10) keV	350(40) ms	IT (97.5%)	50Sc	2+,3+

β− (2.5%)	50Ti

51Sc	21	30	50.953603(22)	12.4(1) s	β−	51Ti	(7/2)−

52Sc	21	31	51.95668(21)	8.2(2) s	β−	52Ti	3(+)

53Sc	21	32	52.95961(32)#	2.4(0.6) s	β− (>99.9%)	53Ti	(7/2−)#

β−, n (<.1%)	52Ti

54Sc	21	33	53.96326(40)	260(30) ms	β− (>99.9%)	54Ti	3+#

β−, n (<.1%)	53Ti

54mSc	110(3) keV	7(5) µs	(5+)

55Sc	21	34	54.96824(79)	0.115(15) s	β− (>99.9%)	55Ti	7/2−#

β−, n (<.1%)	54Ti

56Sc	21	35	55.97287(75)#	35(5) ms	β−	56Ti	(1+)

57Sc	21	36	56.97779(75)#	13(4) ms	β−	57Ti	7/2−#

58Sc	21	37	57.98371(86)#	12(5) ms	β−	58Ti	(3+)#

59Sc	21	38	58.98922(97)#	10# ms	β−, n	58Ti	7/2−#

β−	59Ti

60Sc	21	39	59.99571(97)#	3# ms (>620 ns)	β−	60Ti	3+#

β−, n	59Ti

β−, 2n	58Ti

61Sc	21	40	61.001(600)#	2# ms (>620 ns)	β−	61Ti	7/2-#

β−, n	60Ti

β−, 2n	59Ti

Sentence(s)

⁴⁴Sc has a half-life of 3.97 hours.

final_sentence: ⁴⁴Sc has a half-life of 3.97 hours.