Gold-194m1
Properties and data of the isotope 194m1Au.
See also: list of Gold isotopes.
General data
Name of the isotope:Gold-194m1; Au-194m1Symbol:194m1Au or 194m179AuMass number A:194 (= number of nucleons)Atomic number Z:79 (= number of protons)Neutrons N:115Isotopic mass:193.9654191(23) u (atomic weight of Gold-194m1)
Excitation energy: 107.4(5) keVNuclide mass:193.922086 u (calculated nuclear mass without electrons)Mass excess:-32.2119 MeVMass defect:1.649223768 u (per nucleus)Nuclear binding energy:1536.24204455 MeV (per nucleus)
7.91877343 MeV (average binding energy per nucleon)Half-life:600(8) msDecay constant λ:1.1552453009332 s-1Specific activity α:3.604689082901 × 10+21 Bq g-1
97424029267.611 Ci g-1Spin and parity:
(nuclear angular momentum)(5+)
Radioactive Decay
Half-life T½ = 600(8) ms respectively 6.00 × 10-1 seconds s.
Decay mode | Daughter | Probability | Decay energy | γ energy (intensity) |
---|
Iso | 194Au | 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 |
---|
194Au | | 38.02(10) h | 1- |
194m2Au | 475.8(6) keV | 420(10) ms | (11-) |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 115) and isobaric (same nucleon number A = 194) with Gold-194m1. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
Z | Isotone N = 115 | Isobar A = 194 |
70 | 185Yb | |
71 | 186Lu | |
72 | 187Hf | |
73 | 188Ta | 194Ta |
74 | 189W | 194W |
75 | 190Re | 194Re |
76 | 191Os | 194Os |
77 | 192Ir | 194Ir |
78 | 193Pt | 194Pt |
79 | 194Au | 194Au |
80 | 195Hg | 194Hg |
81 | 196Tl | 194Tl |
82 | 197Pb | 194Pb |
83 | 198Bi | 194Bi |
84 | 199Po | 194Po |
85 | 200At | 194At |
86 | 201Rn | 194Rn |
87 | 202Fr | |
88 | 203Ra | |
89 | 204Ac | |
Last update: 2020-10-22
Perma link: https://www.chemlin.org/isotope/gold-194m1
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