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Periodic Table of Elements

Co - Cobalt

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Nuclides / Isotopes

Nuc- lide	Atomic Mass	NN	Abun %	Spin	Half Life	DM	DT	BR %	Decay Energy (MeV)
Co48	48.002	21	Syn
Co49	48.99	22	Syn
Co50	49.982	23	Syn	6+	44ms	ε + P	Mn49	>42	13.130
					44ms	ε	Fe50		17.280
Co51	50.971	24	Syn	7/2-
Co52	51.9636	25	Syn		18ms	ε	Fe52		14.410
					18ms	ε + P	Mn51		6.630
Co53	52.9542	26	Syn	7/2-	240ms	ε	Fe53		8.302
meta state 3.190MeV			Syn	19/2-	247ms	ε	Fe53	~98.5	11.492
					247ms	P	Fe52	~1.5	1.591
Co54	53.9485	27	Syn	0+	193.23ms	ε	Fe54		8.243
meta state 0.199MeV			Syn	7+	1.48m	ε	Fe54		8.442
Co55	54.942	28	Syn	7/2-	17.53h	ε	Fe55		3.451
Co56	55.9398	29	Syn	4+	77.27d	ε	Fe56		4.566
Co57	56.9363	30	Syn	7/2-	271.79d	ε	Fe57		0.836
Co58	57.9358	31	Syn	2+	70.86d	ε	Fe58		2.307
meta state 0.024MeV			Syn	5+	9.04h	IT			0.025
Co59	58.9332	32	100.	7/2-	Stable
Co60	59.9338	33	Syn	5+	5.2714y	β^-	Ni60		2.824
meta state 0.059MeV			Syn	2+	10.467m	IT		99.76	0.059
					10.467m	β^-	Ni60	0.24	2.883
Co61	60.9325	34	Syn	7/2-	1.650h	β^-	Ni61		1.322
Co62	61.9341	35	Syn	2+	1.5m	β^-	Ni62		5.315
meta state 0.022MeV			Syn	5+	13.91m	β^-	Ni62	>99	5.337
					13.91m	IT		<1	0.022
Co63	62.9336	36	Syn	7/2-	27.4s	β^-	Ni63		3.672
Co64	63.9358	37	Syn	1+	0.3s	β^-	Ni64		7.307
Co65	64.9365	38	Syn	7/2-	1.2s	β^-	Ni65		5.958
Co66	65.94	39	Syn	3+	0.233s	β^-	Ni66		10.000
Co67	66.941	40	Syn	7/2-	0.42s	β^-	Ni67		8.400
Co68	67.944	41	Syn		0.18s	β^-	Ni68		11.700
Co69	68.945	42	Syn		0.27s	β^-	Ni69		9.300
Co70	69.95	43	Syn		150ms	β^-	Ni70		12.700
Co71	70.952	44	Syn	7/2-	210ms	β^-	Ni71		10.900
Co72	71.956	45	Syn		90ms	β^-
Co73	7/2-	46	Syn			β^-

Nuclide	Potential Parent Nuclides
Co48	None known
Co49	None known
Co50	None known
Co51	None known
Co52	Ni52 (Syn)
Co53	Ni53 (Syn)
meta state 3.190MeV	None known
Co54	Ni54 (Syn)
meta state 0.199MeV	None known
Co55	Cu56 (Syn) Ni55 (Syn)
Co56	Ni56 (Syn)
Co57	Ni57 (Syn)
Co58	None known
meta state 0.024MeV	None known
Co59	Fe59 (Syn) Ni59 (Syn)
Co60	Fe60 (Syn)
meta state 0.059MeV	None known
Co61	Fe61 (Syn)
Co62	Fe62 (Syn)
meta state 0.022MeV	None known
Co63	Fe63 (Syn)
Co64	Fe64 (Syn)
Co65	Fe65 (Syn)
Co66	None known
Co67	Fe67 (Syn)
Co68	Fe68 (Syn)
Co69	None known
Co70	None known
Co71	None known
Co72	None known
Co73	None known
Key: NN = Number of Neutrons Abun % = Natural Abundance (as a percentage) Syn = Synthetic Nuclide (does not occur in nature) DM = Decay Mode α = Alpha emission β^- = Beta emission β^- β^- = Double beta decay β⁺ = Positron emission ε = Electron Capture IT = Isomeric Transition N = Neutron emission P = Proton emission SF = Spontaneous Fission DT = Decays To BR % = Branch Ratio (as a percentage)

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References

A list of reference sources used to compile the data provided on our periodic table of elements can be found on the main periodic table page.

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Periodic Table of Elements

Co - Cobalt

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Nuclides / Isotopes

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