Gold-196
Properties and data of the isotope 196Au.
See also: list of Gold isotopes.
General data
Name of the isotope:Gold-196; Au-196Symbol:196Au or 19679AuMass number A:196 (= number of nucleons)Atomic number Z:79 (= number of protons)Neutrons N:117Isotopic mass:195.966571(3) u (atomic weight of Gold-196)Nuclide mass:195.9232379 u (calculated nuclear mass without electrons)Mass excess:-31.13891 MeVMass defect:1.6654017 u (per nucleus)Nuclear binding energy:1551.31169114 MeV (per nucleus)
7.91485557 MeV (average binding energy per nucleon)Separation energy:SN = 6.643(3) MeV (first neutron)
SP = 5.634(3) MeV (first proton)Half-life:6.1669(6) dDecay constant λ:1.300902692120 × 10-6 s-1Specific activity α:4.017548336932 × 10+15 Bq g-1
108582.38748467 Ci g-1Spin and parity:
(nuclear angular momentum)2-Charge radius:5.4332(39) femtometer fmYear of discovery:1937
Radioactive Decay
Half-life T½ = 6.1669(6) d respectively 5.3282016 × 105 seconds s.
| Decay mode | Daughter | Probability | Decay energy | γ energy
(intensity) |
|---|
| EE/β+ | 196Pt | 93.0(3) % | 1.506(3) MeV | |
| β- | 196Hg | 7.0(3) % | 0.687(3) MeV | |
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 |
|---|
| 196m1Au | 84.656(20) keV | 8.1(2) s | 5+ |
| 196m2Au | 595.66(4) keV | 9.6(1) h | 12- |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 117) and isobaric (same nucleon number A = 196) with Gold-196. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
| OZ | Isotone N = 117 | Isobar A = 196 |
|---|
| 71 | 188Lu | |
| 72 | 189Hf | |
| 73 | 190Ta | |
| 74 | 191W | 196W |
| 75 | 192Re | 196Re |
| 76 | 193Os | 196Os |
| 77 | 194Ir | 196Ir |
| 78 | 195Pt | 196Pt |
| 79 | 196Au | 196Au |
| 80 | 197Hg | 196Hg |
| 81 | 198Tl | 196Tl |
| 82 | 199Pb | 196Pb |
| 83 | 200Bi | 196Bi |
| 84 | 201Po | 196Po |
| 85 | 202At | 196At |
| 86 | 203Rn | 196Rn |
| 87 | 204Fr | |
| 88 | 205Ra | |
| 89 | 206Ac | |
| 90 | 207Th | |
External data and identifiers
Last update: 2020-10-22
Perma link: https://www.chemlin.org/isotope/gold-196
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