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Cobalt-50

Properties and data of the isotope 50Co.


Content

See also: list of Cobalt isotopes.

 

General data

Name of the isotope:Cobalt-50; Co-50Symbol:50Co or 5027CoMass number A:50 (= number of nucleons)Atomic number Z:27 (= number of protons)Neutrons N:23Isotopic mass:49.98107(43) u (atomic weight of Cobalt-50)Nuclide mass:49.9662587 u (calculated nuclear mass without electrons)Mass excess:-17.63318 MeVMass defect:0.429498932 u (per nucleus)Nuclear binding energy:400.07567816 MeV (per nucleus)
8.00151356 MeV (average binding energy per nucleon)
Separation energy:SN = 15.82(64) MeV (first neutron)
SP = 0.17(40) MeV (first proton)
Half-life:38(2) msDecay constant λ:18.240715277893 s-1Specific activity α:2.241799118152 × 10+23 Bq g-1
6058916535547.3 Ci g-1
Spin and parity:
(nuclear angular momentum)
(6+)Isobaric spin: 2Mirror nucleus:Vanadium-50Year of discovery:1987

 

Radioactive Decay

Half-life T½ = 38(2) ms respectively 3.8 × 10-2 seconds s.

Decay modeDaughterProbabilityDecay energyγ energy
(intensity)
β+, p49Mn70.5(7) %
EE, 2p48Mn?
β+50Fe?16,85(40) MeV

 

Parent Nuclides

Direct parent isotope is: 50Ni.

 

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 23) and isobaric (same nucleon number A = 50) with Cobalt-50. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

 

OZIsotone N = 23Isobar A = 50
1033Ne
1134Na
1235Mg
1336Al
1437Si
1538P
1639S
1740Cl50Cl
1841Ar50Ar
1942K50K
2043Ca50Ca
2144Sc50Sc
2245Ti50Ti
2346V50V
2447Cr50Cr
2548Mn50Mn
2649Fe50Fe
2750Co50Co
2851Ni50Ni

 

External data and identifiers

Adopted Levels, Gammas:NuDat 50Co

 


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Last update: 2023-10-04


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