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Periodic Table of Elements

Ir - Iridium

Iridium Menu

Nuclides / Isotopes

Nuc-
lide		Atomic
Mass		NNAbun
%		SpinHalf LifeDMDTBR
%		Decay
Energy
(MeV)
Ir165 88Syn11/2-300us    
Ir166165.98689Syn2-10.5msαRe162996.700
Ir167166.98290Syn >5msαRe163<=1006.540
 >5msPOs166 6.540
Ir168167.9891Syn 161msαRe164<=1006.410
Ir169168.976492Syn 0.4sαRe165~1006.280
 0.4s εOs169 8.680
 0.4sPOs168 0.760
Ir170169.97593Syn 1.05sαRe166756.179
 1.05s εOs1702510.680
Ir171170.97294Syn 1.5sαRe167~1006.159
 1.5s εOs171 8.200
 1.5sPOs170 0.390
Ir172171.97195Syn3+4.4s εOs172989.800
 4.4sαRe168~25.991
meta state 0.139MeVSyn7+2s εOs172779.939
 2sαRe168236.130
Ir173172.96896Syn2+, 5/2+9s εOs173>937.400
meta state 0.000MeVSyn11/2-2.2s εOs173887.400
 2.2sαRe169125.840
Ir174173.96797Syn3+9s εOs17499.69.000
 9sαRe1700.45.624
meta state 0.193MeVSyn7+4.9s εOs17497.489.193
 4.9sαRe17000.525.817
Ir175174.96498Syn5/2-9s εOs17599.156.600
 9sαRe1710.855.620
Ir176175.96499Syn 8s εOs17697.98.000
 8sαRe1722.15.240
Ir177176.961100Syn5/2-30s εOs17799.945.700
 30sαRe1730.065.130
Ir178177.961101Syn 12s εOs178 7.200
Ir179178.959102Syn5/2-79s εOs179 4.900
Ir180179.959103Syn 1.5m εOs180 6.400
Ir181180.958104Syn5/2-4.9m εOs181 4.070
Ir182181.958105Syn5+15m εOs182 5.610
Ir183182.957106Syn5/2-58m εOs183 3.450
Ir184183.957107Syn5-3.09h εOs184 4.600
Ir185184.957108Syn5/2-14.4h εOs185 2.370
Ir186185.958109Syn5+16.64h εOs186 3.831
meta state 0.000MeVSyn2-1.9h εOs186<=1003.831
 1.9hIT >0 
Ir187186.9574110Syn3/2+10.5h εOs187 1.502
meta state 0.186MeVSyn9/2-30.3msITIr187 0.186
Ir188187.9589111Syn1-41.5h εOs188 2.809
meta state 0.000MeVSyn 4.2msITIr188  
Ir189188.9587112Syn3/2+13.2d εOs189 0.532
meta state 0.372MeVSyn11/2-13.3msIT  0.372
meta state 2.333MeVSyn25/2+3.7msIT  2.333
Ir190189.961113Syn4-11.78d εOs190<0.0022.000
meta state 0.026MeVSyn1-1.2hIT  0.026
meta state 0.148MeVSyn11-3.25h εOs19094.42.149
 3.25hIT 5.60.149
Ir191190.960611437.33.2+Stable 
meta state 0.171MeVSyn11.2-4.94sIT  0.171
meta state 2.047MeVSyn 5.5sIT  2.047
Ir192191.9626115Syn4+73.831d β-Pt19295.241.460
 73.831d εOs1924.761.046
meta state 0.057MeVSyn1-1.45mIT 99.980.057
 1.45m β-Pt1920.021.517
meta state 0.155MevSyn9241yIT  0.155
Ir193192.962911662.73/2+Stable 
meta state 0.080MeVSyn11/2-10.53dIT  0.080
Ir194193.9651117Syn1-19.28h β-Pt194  
meta state 0.147MeVSyn4+31.85msIT  0.147
meta state 0.190MeVSyn10, 11171d β-Pt194 2.437
Ir195194.966118Syn3/2+2.5h β-Pt195 1.120
meta state 0.100MeVSyn11/2-3.8h β-Pt195951.220
 3.8hIT 50.100
Ir196195.9684119Syn0-52s β-Pt196 3.210
meta state 0.410MeVSyn10, 11-1.4h β-Pt196~10053.620
 1.4hITIr196<0.30.410
Ir197196.9696120Syn3/2+5.8m β-Pt197 2.155
meta state 0.115MeVSyn11/2-8.9m β-Pt19799.752.270
 8.9mITIr1970.250.115
Ir198197.972121Syn 8s β-Pt198 4.100
Ir199 122Syn      
NuclidePotential Parent Nuclides
Ir165None known
Ir166None known
Ir167None known
Ir168Au172 (Syn)
Ir169Au173 (Syn)
Ir170Au174 (Syn)
Ir171Au175 (Syn) Pt171 (Syn)
Ir172Au176 (Syn) Pt172 (Syn)
meta state 0.139MeVNone known
Ir173Au177 (Syn) Pt173 (Syn)
meta state 0.000MeVNone known
Ir174Au178 (Syn) Pt174 (Syn)
meta state 0.193MeVNone known
Ir175Au179 (Syn) Pt175 (Syn)
Ir176Au180 (Syn) Pt176 (Syn)
Ir177Au181 (Syn) Pt177 (Syn)
Ir178Au182 (Syn) Pt178 (Syn)
Ir179Au183 (Syn) Pt179 (Syn)
Ir180Au184m (Syn) Pt180 (Syn)
Ir181Au185 (Syn) Pt181 (Syn)
Ir182Pt182 (Syn)
Ir183Au187 (Syn) Pt183 (Syn) Pt183m (Syn)
Ir184Pt184 (Syn)
Ir185Au189 (Syn) Pt185 (Syn) Pt185m (Syn)
Ir186Au190 (Syn) Pt186 (Syn)
meta state 0.000MeVNone known
Ir187Ir187m (Syn) Pt187 (Syn)
meta state 0.186MeVNone known
Ir188Ir188m (Syn) Pt188 (Syn)
meta state 0.000MeVNone known
Ir189Pt189 (Syn)
meta state 0.372MeVNone known
meta state 2.333MeVNone known
Ir190None known
meta state 0.026MeVNone known
meta state 0.148MeVNone known
Ir191Pt191 (Syn)
meta state 0.171MeVNone known
meta state 2.047MeVNone known
Ir192None known
meta state 0.057MeVNone known
meta state 0.155MevNone known
Ir193Os193 (Syn) Pt193 (Syn)
meta state 0.080MeVNone known
Ir194Os194 (Syn)
meta state 0.147MeVNone known
meta state 0.190MeVNone known
Ir195Os195 (Syn)
meta state 0.100MeVNone known
Ir196Ir196m (Syn) Os196 (Syn)
meta state 0.410MeVNone known
Ir197Ir197m (Syn)
meta state 0.115MeVNone known
Ir198None known
Ir199None known

Key:

  • 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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