About   |   More   |   Search
ChemLin Logo

Cobalt-54m

Properties and data of the isotope 54Co.


Content

See also: list of Cobalt isotopes.

 

General data

Name of the isotope:Cobalt-54m; Co-54mSymbol:54Co or 5427CoMass number A:54 (= number of nucleons)Atomic number Z:27 (= number of protons)Neutrons N:27Isotopic mass:53.9484592(4) u (atomic weight of Cobalt-54m)
Excitation energy: 197.1(4) keV
Nuclide mass:53.9336479 u (calculated nuclear mass without electrons)Mass excess:-48.00995 MeVMass defect:0.496769396 u (per nucleus)Nuclear binding energy:462.73771176 MeV (per nucleus)
8.56921688 MeV (average binding energy per nucleon)
Half-life:1.48(2) minDecay constant λ:0.0078057114927922 s-1Specific activity α:8.869263041815 × 10+19 Bq g-1
2397098119.4096 Ci g-1
Spin and parity:
(nuclear angular momentum)
7+Isobaric spin: 0

 

Radioactive Decay

Half-life T½ = 1.48(2) min (minutes) respectively 8.88 × 101 seconds s.

Decay modeDaughterProbabilityDecay energyγ energy
(intensity)
EE β+54Fe100 %8.445(5) MeV

 

Nuclear Isomers

Nuclear isomers or excited states with the activation energy in keV related to the ground state.

Nuclear IsomerExcitation EnergyHalf-lifeSpin
54Co193.28(7) ms0+

 

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 27) and isobaric (same nucleon number A = 54) with Cobalt-54m. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

 

OZIsotone N = 27Isobar A = 54
1138Na
1239Mg
1340Al
1441Si
1542P
1643S
1744Cl
1845Ar
1946K54K
2047Ca54Ca
2148Sc54Sc
2249Ti54Ti
2350V54V
2451Cr54Cr
2552Mn54Mn
2653Fe54Fe
2754Co54Co
2855Ni54Ni
2956Cu54Cu
3057Zn54Zn
3158Ga
3259Ge

 

External data and identifiers

Adopted Levels, Gammas:NuDat 54Co

 


More Chemistry

isotopes

 

 

 

 

Social Media

Facebook

LinkedIn

Twitter

 

 


Last update: 2020-10-14


© 1996 - 2024 ChemLin