Chromium-59
Properties and data of the isotope 59Cr.
See also: list of Chromium isotopes.
General data
Name of the isotope:Chromium-59; Cr-59Symbol:59Cr or 5924CrMass number A:59 (= number of nucleons)Atomic number Z:24 (= number of protons)Neutrons N:35Isotopic mass:58.94838(23) u (atomic weight of Chromium-59)Nuclide mass:58.9352144 u (calculated nuclear mass without electrons)Mass excess:-48.08372 MeVMass defect:0.542692828 u (per nucleus)Nuclear binding energy:505.51511313 MeV (per nucleus)
8.56805276 MeV (average binding energy per nucleon)Separation energy:SN = 4.17(22) MeV (first neutron)
SP = 14.97(23) MeV (first proton)Half-life:0.74(28) sDecay constant λ:0.93668537913506 s-1Specific activity α:9.725605680335 × 10+21 Bq g-1
262854207576.64 Ci g-1Spin and parity:
(nuclear angular momentum)(1/2-)Year of discovery:1980
Radioactive Decay
Half-life T½ = 0.74(28) s respectively 7.4 × 10-1 seconds s.
Decay mode | Daughter | Probability | Decay energy | γ energy (intensity) |
---|
β- | 59Mn | 100 % | 7.44(22) MeV | |
Parent Nuclides
Direct parent isotope is: 59V.
Nuclear Isomers
Nuclear isomers or excited states with the activation energy in keV related to the ground state.
Nuclear Isomer | Excitation Energy | Half-life | Spin |
---|
59mCr | 502.7(11) keV | 96(20) μs | (9/2+) |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 35) and isobaric (same nucleon number A = 59) with Chromium-59. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
OZ | Isotone N = 35 | Isobar A = 59 |
18 | 53Ar | |
19 | 54K | |
20 | 55Ca | |
21 | 56Sc | 59Sc |
22 | 57Ti | 59Ti |
23 | 58V | 59V |
24 | 59Cr | 59Cr |
25 | 60Mn | 59Mn |
26 | 61Fe | 59Fe |
27 | 62Co | 59Co |
28 | 63Ni | 59Ni |
29 | 64Cu | 59Cu |
30 | 65Zn | 59Zn |
31 | 66Ga | 59Ga |
32 | 67Ge | 59Ge |
33 | 68As | |
34 | 69Se | |
35 | 70Br | |
36 | 71Kr | |
37 | 72Rb | |
38 | 73Sr | |
External data and identifiers
Last update: 2020-10-13
Perma link: https://www.chemlin.org/isotope/chromium-59
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