Bismuth-194m1
Properties and data of the isotope 194Bi.
See also: list of Bismuth isotopes.
General data
Name of the isotope:Bismuth-194m1; Bi-194m1Symbol:194Bi or 19483BiMass number A:194 (= number of nucleons)Atomic number Z:83 (= number of protons)Neutrons N:111Isotopic mass:193.982792(7) u (atomic weight of Bismuth-194m1)
Excitation energy: +x keVNuclide mass:193.9372651 u (calculated nuclear mass without electrons)Mass excess:-16.02915 MeVMass defect:1.628491332 u (per nucleus)Nuclear binding energy:1516.92990481 MeV (per nucleus)
7.81922631 MeV (average binding energy per nucleon)Half-life:115(4) sDecay constant λ:0.0060273667874778 s-1Specific activity α:1.880707347600 × 10+19 Bq g-1
508299283.13535 Ci g-1Spin and parity:
(nuclear angular momentum)(10-)
Radioactive Decay
Half-life T½ = 115(4) s respectively 1.15 × 102 seconds s.
Decay mode | Daughter | Probability | Decay energy | γ energy (intensity) |
---|
α | 190Tl | 0.20(7) % | | |
EE/β+ | 194Pb | 99.80(7) % | | |
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 |
---|
194Bi | | 95(3) s | (3+) |
194m2Bi | +y keV | 125(2) s | (6+,7+) |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 111) and isobaric (same nucleon number A = 194) with Bismuth-194m1. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
OZ | Isotone N = 111 | Isobar A = 194 |
70 | 181Yb | |
71 | 182Lu | |
72 | 183Hf | |
73 | 184Ta | 194Ta |
74 | 185W | 194W |
75 | 186Re | 194Re |
76 | 187Os | 194Os |
77 | 188Ir | 194Ir |
78 | 189Pt | 194Pt |
79 | 190Au | 194Au |
80 | 191Hg | 194Hg |
81 | 192Tl | 194Tl |
82 | 193Pb | 194Pb |
83 | 194Bi | 194Bi |
84 | 195Po | 194Po |
85 | 196At | 194At |
86 | 197Rn | 194Rn |
External data and identifiers
Last update: 2020-10-23
Perma link: https://www.chemlin.org/isotope/bismuth-194m1
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