About   |   More   |   Search
ChemLin Logo

Gold-172

Properties and data of the isotope 172Au.


Content

See also: list of Gold isotopes.

 

General data

Name of the isotope:Gold-172; Au-172Symbol:172Au or 17279AuMass number A:172 (= number of nucleons)Atomic number Z:79 (= number of protons)Neutrons N:93Isotopic mass:171.99000(6) u (atomic weight of Gold-172)Nuclide mass:171.9466669 u (calculated nuclear mass without electrons)Mass excess:-9.31494 MeVMass defect:1.434014716 u (per nucleus)Nuclear binding energy:1335.77610387 MeV (per nucleus)
7.76614014 MeV (average binding energy per nucleon)
Half-life:22 msDecay constant λ:31.506690025452 s-1Specific activity α:1.109577341307 × 10+23 Bq g-1
2998857679210.3 Ci g-1
Spin and parity:
(nuclear angular momentum)
Year of discovery:1993

 

Radioactive Decay

Half-life T½ = 22 ms respectively 2.2 × 10-2 seconds s.

Decay modeDaughterProbabilityDecay energyγ energy
(intensity)
α168Irca. 100 %6.923(10) MeV
p171Pt?
EE/β+172Pt?11,79(6) MeV

 

Nuclear Isomers

Nuclear isomers or excited states with the activation energy in keV related to the ground state.

Nuclear IsomerExcitation EnergyHalf-lifeSpin
172mAu+x keV7.7(14) s

 

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 93) and isobaric (same nucleon number A = 172) with Gold-172. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

 

OZIsotone N = 93Isobar A = 172
54147Xe
55148Cs
56149Ba
57150La
58151Ce
59152Pr
60153Nd
61154Pm
62155Sm
63156Eu
64157Gd
65158Tb172Tb
66159Dy172Dy
67160Ho172Ho
68161Er172Er
69162Tm172Tm
70163Yb172Yb
71164Lu172Lu
72165Hf172Hf
73166Ta172Ta
74167W172W
75168Re172Re
76169Os172Os
77170Ir172Ir
78171Pt172Pt
79172Au172Au
80173Hg172Hg

 

External data and identifiers

Adopted Levels, Gammas:NuDat 172Au

 


More Chemistry

isotopes

 

 

 

 

Social Media

Facebook

LinkedIn

Twitter

 

 


Last update: 2020-10-22


© 1996 - 2024 ChemLin