Gold-176m2
Properties and data of the isotope 176Au.
See also: list of Gold isotopes.
General data
Name of the isotope:Gold-176m2; Au-176m2Symbol:176Au or 17679AuMass number A:176 (= number of nucleons)Atomic number Z:79 (= number of protons)Neutrons N:97Isotopic mass:175.98012(4) u (atomic weight of Gold-176m2)
Excitation energy: +y keVNuclide mass:175.9367869 u (calculated nuclear mass without electrons)Mass excess:-18.5181 MeVMass defect:1.47855438 u (per nucleus)Nuclear binding energy:1377.26453364 MeV (per nucleus)
7.82536667 MeV (average binding energy per nucleon)Half-life:1.36(2) sDecay constant λ:0.50966704452937 s-1Specific activity α:1.753878133613 × 10+21 Bq g-1
47402111719.281 Ci g-1Spin and parity:
(nuclear angular momentum)(9+)
Radioactive Decay
Half-life T½ = 1.36(2) s.
Decay mode | Daughter | Probability | Decay energy | γ energy (intensity) |
---|
α | 172Ir | 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 |
---|
176Au | | | |
176m1Au | +x keV | 1.05(1) s | (3-) |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 97) and isobaric (same nucleon number A = 176) with Gold-176m2. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
OZ | Isotone N = 97 | Isobar A = 176 |
56 | 153Ba | |
57 | 154La | |
58 | 155Ce | |
59 | 156Pr | |
60 | 157Nd | |
61 | 158Pm | |
62 | 159Sm | |
63 | 160Eu | |
64 | 161Gd | |
65 | 162Tb | |
66 | 163Dy | |
67 | 164Ho | |
68 | 165Er | 176Er |
69 | 166Tm | 176Tm |
70 | 167Yb | 176Yb |
71 | 168Lu | 176Lu |
72 | 169Hf | 176Hf |
73 | 170Ta | 176Ta |
74 | 171W | 176W |
75 | 172Re | 176Re |
76 | 173Os | 176Os |
77 | 174Ir | 176Ir |
78 | 175Pt | 176Pt |
79 | 176Au | 176Au |
80 | 177Hg | 176Hg |
81 | 178Tl | 176Tl |
82 | 179Pb | |
Last update: 2020-10-22
Perma link: https://www.chemlin.org/isotope/gold-176m2
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