Periodic Table of Elements

Au - Gold

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Nuclides / Isotopes

SpinHalf LifeDMDTBR
Au171 92Syn      
Au172171.9993Syn 6.3msαIr168<=1007.100
Au173172.98694Syn 59msαIr169<=1006.900
Au174173.98595Syn 120msαIr170>06.782
Au175174.98296Syn 200msαIr171946.778
Au176175.9897Syn 1.08sαIr172 6.542
 1.08sεPt176 10.500
Au177176.97798Syn 1.18sεPt177>=608.200
Au178177.97699Syn 2.6sεPt178<=609.600
Au179178.973100Syn 7.1sεPt179787.400
Au180179.972101Syn 8.1sεPt180<=98.28.600
Au182181.97103Syn 15.6sεPt18299.877.800
Au184183.967105Syn3+53sεPt184 7.100
meta state 0.000MeVSyn2+53sεPt18499.987.100
 53sITAu184 5.300
meta state 0.000MeVSyn 6.8mεPt185<1004.710
Au186185.966107Syn3-10.7mεPt186 6.040
 8.4mεPt187 3.600
meta state 0.121MeVSyn9/2-2.3sIT  0.121
Au188187.965109Syn1-8.84mεPt188 5.300
Au189188.964110Syn1/2+28.7mαIr185<3.0E -54.400
 28.7mεPt189 2.850
meta state 0.247MeVSyn11/2-4.59mITAu189>00.247
 4.59mεPt189 3.097
Au190189.9647111Syn1-42.8mαIr186<1.0E -63.860
 42.8mεPt190 4.442
meta state 0.000MeVSyn11-125msITAu190  
Au191190.9636112Syn3/2+3.18hεPt191 1.830
meta state 0.266MeVSyn11/2-0.92sIT  0.266
Au192191.9648113Syn1-4.94hεPt192 3.516
meta state 0.000MeVSyn11-160msITAu192  
Au193192.9641114Syn3/2+17.65hεPt193 1.069
meta state 0.290MeVSyn11/2-3.9sIT 99.970.290
Au194193.9653115Syn1-38.02hεPt194 2.492
meta state 0.107MeVSyn5+600msIT  0.107
meta state 0.475MeVSyn11-420msIT  0.476
Au195194.965116Syn3/2+186.09dεPt195 0.227
meta state 0.319MeVSyn11/2-30.5sIT  0.319
meta state 0.084MeVSyn5+8.1sIT  0.085
meta state 0.595MeVSyn12-9.6hIT  0.596
meta state 0.409MeVSyn11/2-7.73sIT  0.409
Au198197.9682119Syn2-2.69517dβ-Hg198 1.372
meta state 0.812MeVSyn12-2.27dIT  0.812
Au199198.9688120Syn3/2+3.139dβ-Hg199 0.453
meta state 0.549MeVSyn11/2-0.44msIT  0.549
Au200199.9707121Syn1-48.4mβ-Hg200 2.240
meta state 0.962MeVSyn12-18.7hβ-Hg200823.202
 18.7hIT 180.962
Au201200.9716122Syn3/2+26mβ-Hg201 1.257
Au202201.974123Syn1-28.8sβ-Hg202 2.950
Au203202.9751124Syn3/2+53sβ-Hg203 2.139
Au204203.978125Syn2-39.8sβ-Hg204 3.800
Au205 126Syn3/2+31s    
NuclidePotential Parent Nuclides
Au171None known
Au172None known
Au173None known
Au174None known
Au175Tl179 (Syn) Tl179m (Syn)
Au176Tl180 (Syn)
Au177Hg177 (Syn)
Au178Hg178 (Syn) Tl182 (Syn)
Au179Hg179 (Syn) Tl183m (Syn)
Au180Hg180 (Syn) Tl184 (Syn)
Au181Tl185m (Syn)
Au182Hg182 (Syn) Tl186 (Syn)
Au183Hg183 (Syn) Tl187 (Syn) Tl187m (Syn)
Au184Au184m (Syn) Hg184 (Syn)
meta state 0.000MeVNone known
Au185Au185m (Syn) Hg185 (Syn) Hg185m (Syn)
meta state 0.000MeVNone known
Au186Hg186 (Syn)
Au187Hg187 (Syn) Hg187m (Syn)
meta state 0.121MeVNone known
Au188Hg188 (Syn)
Au189Au189m (Syn) Hg189 (Syn) Hg189m (Syn)
meta state 0.247MeVNone known
Au190Au190m (Syn) Hg190 (Syn) Tl194 (Syn)
meta state 0.000MeVNone known
Au191Hg191 (Syn) Hg191m (Syn)
meta state 0.266MeVNone known
Au192Au192m (Syn) Hg192 (Syn)
meta state 0.000MeVNone known
Au193Hg193 (Syn) Hg193m (Syn)
meta state 0.290MeVNone known
Au194Hg194 (Syn)
meta state 0.107MeVNone known
meta state 0.475MeVNone known
Au195Hg195 (Syn) Hg195m (Syn)
meta state 0.319MeVNone known
Au196None known
meta state 0.084MeVNone known
meta state 0.595MeVNone known
Au197Hg197 (Syn) Hg197m (Syn) Pt197 (Syn) Pt197m (Syn)
meta state 0.409MeVNone known
Au198None known
meta state 0.812MeVNone known
Au199Pt199 (Syn)
meta state 0.549MeVNone known
Au200Pt200 (Syn)
meta state 0.962MeVNone known
Au201Pt201 (Syn)
Au202None known
Au203None known
Au204None known
Au205None known


  • NN = Number of Neutrons
  • Abun % = Natural Abundance (as a percentage)
  • Syn = Synthetic Nuclide (does not occur in nature)
  • DM = Decay Mode
    α = Alpha emission
    β- = Beta emission
    β- β- = Double beta decay
    β+ = Positron emission
    ε = Electron Capture
    IT = Isomeric Transition
    N = Neutron emission
    P = Proton emission
    SF = Spontaneous Fission
  • DT = Decays To
  • BR % = Branch Ratio (as a percentage)

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