Gold-170
Properties and data of the isotope 170Au.
See also: list of Gold isotopes.
General data
Name of the isotope:Gold-170; Au-170Symbol:170Au or 17079AuMass number A:170 (= number of nucleons)Atomic number Z:79 (= number of protons)Neutrons N:91Isotopic mass:169.99597(21) u (atomic weight of Gold-170)Nuclide mass:169.9526369 u (calculated nuclear mass without electrons)Mass excess:-3.75392 MeVMass defect:1.410714884 u (per nucleus)Nuclear binding energy:1314.07245016 MeV (per nucleus)
7.72983794 MeV (average binding energy per nucleon)Separation energy:SN = 10.03(36) MeV (first neutron)Half-life:0.29 msDecay constant λ:2.390162691586 s-1Specific activity α:8.517098465619 × 10+21 Bq g-1
230191850422.14 Ci g-1Spin and parity:
(nuclear angular momentum)(2-)Year of discovery:2002
Radioactive Decay
Half-life T½ = 0.29 ms respectively 2.9 × 10-1 seconds s.
Decay mode | Daughter | Probability | Decay energy | γ energy (intensity) |
---|
α | 166Ir | 11(10) % | 7.177(15) MeV | |
p | 169Pt | 89(10) % | | |
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 |
---|
170mAu | 285(13) keV | 0.62 ms | (9+) |
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 91) and isobaric (same nucleon number A = 170) with Gold-170. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
OZ | Isotone N = 91 | Isobar A = 170 |
52 | 143Te | |
53 | 144I | |
54 | 145Xe | |
55 | 146Cs | |
56 | 147Ba | |
57 | 148La | |
58 | 149Ce | |
59 | 150Pr | |
60 | 151Nd | |
61 | 152Pm | |
62 | 153Sm | |
63 | 154Eu | |
64 | 155Gd | 170Gd |
65 | 156Tb | 170Tb |
66 | 157Dy | 170Dy |
67 | 158Ho | 170Ho |
68 | 159Er | 170Er |
69 | 160Tm | 170Tm |
70 | 161Yb | 170Yb |
71 | 162Lu | 170Lu |
72 | 163Hf | 170Hf |
73 | 164Ta | 170Ta |
74 | 165W | 170W |
75 | 166Re | 170Re |
76 | 167Os | 170Os |
77 | 168Ir | 170Ir |
78 | 169Pt | 170Pt |
79 | 170Au | 170Au |
80 | 171Hg | |
External data and identifiers
Last update: 2020-10-22
Perma link: https://www.chemlin.org/isotope/gold-170
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