Krypton-84m1
Properties and data of the isotope 84m1Kr.
See also: List of individual Krypton isotopes (and general data sources).
General data
Name of the isotope:Krypton-84m1; Kr-84m1Symbol:84m1Kr or 84m136KrMass number A:84 (= number of nucleons)Atomic number Z:36 (= number of protons)Neutrons N:48Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):1.3333333333333 (= neutron-proton ratio)Neutron excess (N-Z):12Excitation energy:3236.07(18) keVIsotopic mass:83.91149773(3) u (atomic weight of Krypton-84m1)Nuclide mass:83.8917496 u (calculated nuclear mass without electrons)Mass excess:-82.43933 MeVMass defect:0.78611939000001 u (per nucleus)Nuclear binding energy:732.26549507 MeV (per nucleus)
8.71744637 MeV (average binding energy per nucleon)Half-life:1.83(4) μsDecay constant λ:378768.95112565 s-1Specific activity α:2.748192743432 × 10+27 Bq g-1
7.427547955223 × 10+16 Ci g-1Spin and parity:
(nuclear angular momentum)8+Magnetic dipole moment:μ(μN) = - 1.968(16)Quadrupole moment Q:+ 0.36(4) barn (100 fm2)Nuclear g-factor:gl = -0.246
Radioactive Decay
Half-life T½ = 1.83(4) μs respectively 1.83 × 10-6 seconds s.
Decay
mode | Daughter | Probability | Decay energy | γ energy
(intensity) |
|---|
| Iso | 84Kr | 100 % | | |
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 |
|---|
| 84Kr | | stable | 0+ |
| 84m2Kr | 5373.4(4) keV | 43.7(21) ns | 12+ |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 48) and isobaric (same nucleon number A = 84) with Krypton-84m1. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
| Z | Isotone N = 48 | Isobar A = 84 |
|---|
| 26 | 74Fe | |
| 27 | 75Co | |
| 28 | 76Ni | |
| 29 | 77Cu | |
| 30 | 78Zn | 84Zn |
| 31 | 79Ga | 84Ga |
| 32 | 80Ge | 84Ge |
| 33 | 81As | 84As |
| 34 | 82Se | 84Se |
| 35 | 83Br | 84Br |
| 36 | 84Kr | 84Kr |
| 37 | 85Rb | 84Rb |
| 38 | 86Sr | 84Sr |
| 39 | 87Y | 84Y |
| 40 | 88Zr | 84Zr |
| 41 | 89Nb | 84Nb |
| 42 | 90Mo | 84Mo |
| 43 | 91Tc | |
| 44 | 92Ru | |
| 45 | 93Rh | |
| 46 | 94Pd | |
| 47 | 95Ag | |
| 48 | 96Cd | |
| 49 | 97In | |
| 50 | 98Sn | |
External data and identifiers
Last update: 2020-10-14
Perma link: https://www.chemlin.org/isotope/krypton-84m1
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