It's Elemental - Isotopes of the Element Zinc

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Most of the isotope data on this site has been obtained from the National Nuclear Data Center. Please visit their site for more information.

Isotopes of the Element Zinc with a Known Natural Abundance

Mass Number	Natural Abundance	Half-life

64	48.63%	Stable

66	27.90%	Stable

67	4.10%	Stable

68	18.75%	Stable

70	0.62%	> 5×10⁺¹⁴ years

All Known Isotopes of the Element Zinc

Mass Number	Half-life	Decay Mode	Branching Percentage

54	No Data Available	Double Proton Emission	No Data Available

55	> 0.5 microseconds	Electron Capture	No Data Available

		Proton Emission	No Data Available

56	> 0.5 microseconds	Electron Capture	No Data Available

		Proton Emission	No Data Available

57	40 milliseconds	Electron Capture	100.00

		Electron Capture with delayed Proton Emission	>= 65.00

58	86 milliseconds	Electron Capture	100.00

59	182.0 milliseconds	Electron Capture	100.00

		Electron Capture with delayed Proton Emission	0.10

60	2.38 minutes	Electron Capture	100.00

61	89.1 seconds	Electron Capture	100.00

61_m	< 430 milliseconds	Isomeric Transition	No Data Available

61_m2	0.14 seconds	Isomeric Transition	No Data Available

61_m3	< 0.13 seconds	Isomeric Transition	No Data Available

62	9.186 hours	Electron Capture	100.00

63	38.47 minutes	Electron Capture	100.00

64	Stable	-	-

65	244.06 days	Electron Capture	100.00

66	Stable	-	-

67	Stable	-	-

68	Stable	-	-

69	56.4 minutes	Beta-minus Decay	100.00

69_m	13.76 hours	Isomeric Transition	99.97

		Beta-minus Decay	0.03

70	> 5×10⁺¹⁴ years	Double Beta-minus Decay	No Data Available

71	2.45 minutes	Beta-minus Decay	100.00

71_m	3.96 hours	Beta-minus Decay	100.00

		Isomeric Transition	<= 0.05

72	46.5 hours	Beta-minus Decay	100.00

73	23.5 seconds	Beta-minus Decay	100.00

73_m	5.8 seconds	Isomeric Transition	No Data Available

		Beta-minus Decay	No Data Available

73_m2	13.0 milliseconds	Isomeric Transition	100.00

74	95.6 seconds	Beta-minus Decay	100.00

75	10.2 seconds	Beta-minus Decay	100.00

76	5.7 seconds	Beta-minus Decay	100.00

77	2.08 seconds	Beta-minus Decay	100.00

77_m	1.05 seconds	Isomeric Transition	> 50.00

		Beta-minus Decay	< 50.00

78	1.47 seconds	Beta-minus Decay	100.00

79	0.995 seconds	Beta-minus Decay	100.00

		Beta-minus Decay with delayed Neutron Emission	1.30

80	0.545 seconds	Beta-minus Decay	100.00

		Beta-minus Decay with delayed Neutron Emission	1.00

81	0.29 seconds	Beta-minus Decay	100.00

		Beta-minus Decay with delayed Neutron Emission	7.50

82	> 150 nanoseconds	Beta-minus Decay	No Data Available

83	> 150 nanoseconds	Beta-minus Decay	No Data Available