It's Elemental - Isotopes of the Element Manganese

Previous Element	Table of Elements	Next Element

	[Return to Manganese's Data Page]

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 Manganese with a Known Natural Abundance

Mass Number	Natural Abundance	Half-life

55	100%	Stable

All Known Isotopes of the Element Manganese

Mass Number	Half-life	Decay Mode	Branching Percentage

44	< 105 nanoseconds	Electron Capture	No Data Available

		Proton Emission	No Data Available

45	< 70 nanoseconds	Proton Emission	No Data Available

46	41 milliseconds	Electron Capture	100.00

		Electron Capture with delayed Proton Emission	22.00

47	100 milliseconds	Electron Capture	100.00

		Electron Capture with delayed Proton Emission	3.40

48	158.1 milliseconds	Electron Capture	100.00

		Electron Capture with delayed Proton Emission	0.28

		Electron Capture with delayed Alpha Decay	< 6.0E-4

49	382 milliseconds	Electron Capture	100.00

50	283.29 milliseconds	Electron Capture	100.00

50_m	1.75 minutes	Electron Capture	100.00

51	46.2 minutes	Electron Capture	100.00

52	5.591 days	Electron Capture	100.00

52_m	21.1 minutes	Electron Capture	98.25

		Isomeric Transition	1.75

53	3.74×10⁺⁶ years	Electron Capture	100.00

54	312.12 days	Electron Capture	100.00

		Beta-minus Decay	< 2.9E-4

55	Stable	-	-

56	2.5789 hours	Beta-minus Decay	100.00

57	85.4 seconds	Beta-minus Decay	100.00

58	3.0 seconds	Beta-minus Decay	100.00

58_m	65.2 seconds	Beta-minus Decay	~ 80.00

		Isomeric Transition	~ 20.00

59	4.59 seconds	Beta-minus Decay	100.00

60	51 seconds	Beta-minus Decay	100.00

		Beta-minus Decay with delayed Neutron Emission	0.03

60_m	1.77 seconds	Beta-minus Decay	88.50

		Isomeric Transition	11.50

61	0.67 seconds	Beta-minus Decay	100.00

62	0.88 seconds	Beta-minus Decay	100.00

		Beta-minus Decay with delayed Neutron Emission	No Data Available

63	0.29 seconds	Beta-minus Decay	100.00

64	89 milliseconds	Beta-minus Decay	100.00

		Beta-minus Decay with delayed Neutron Emission	1.42

65	88 milliseconds	Beta-minus Decay	100.00

		Beta-minus Decay with delayed Neutron Emission	6.92

66	66 milliseconds	Beta-minus Decay	100.00

		Beta-minus Decay with delayed Neutron Emission	10.88

67	42 milliseconds	Beta-minus Decay	100.00

		Beta-minus Decay with delayed Neutron Emission	No Data Available

68	28 milliseconds	Beta-minus Decay	100.00

		Beta-minus Decay with delayed Neutron Emission	No Data Available

69	14 milliseconds	Beta-minus Decay	100.00