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Periodic Table of Elements

Ho - Holmium

Holmium Menu

Nuclides / Isotopes

Nuc-
lide		Atomic
Mass		NNAbun
%		SpinHalf LifeDMDTBR
%		Decay
Energy
(MeV)
Ho141 74Syn7/2-4.2msP   
Ho142 75Syn      
Ho143142.95576Syn      
Ho144143.95577Syn 0.7s εDy144 11.800
 0.7s ε + PTb143 8.700
Ho145144.94778Syn11/2-2.4s    
Ho146145.94479Syn10+3.6s εDy146 10.700
 3.6s ε + PTb145 7.000
Ho147146.9480Syn11/2-5.8s εDy147 8.100
 5.8s ε + PTb146 4.500
Ho148147.93781Syn1+2.2s εDy148 9.400
meta state 0.000MeVSyn6-9.59s ε + PTb1470.085.000
 9.59s εDy148 9.400
Ho149148.933882Syn11/2-21.1s εDy149 6.014
meta state 0.049MeVSyn1/2+56s εDy149 6.063
Ho150149.93383Syn2-72s εDy150 7.240
meta state 0.800MeVSyn9+23.3s εDy150 8.040
Ho151150.931784Syn11/2-35.2s εDy151785.142
 35.2sαTb147224.695
meta state 0.041MeVSyn1/2+47.2sαTb147804.736
 47.2s εDy151205.165
Ho152151.931785Syn2-161.8s εDy152886.550
 161.8sαTb148124.507
meta state 0.160MeVSyn9+50s εDy15289.26.710
 50sαTb14810.84.667
Ho153152.930286Syn11/2-2.01m εDy15399.954.129
 2.01mαTb1490.054.051
meta state 0.068MeVSyn1/2+9.3m εDy15399.824.179
 9.3mαTb1490.184.119
Ho154153.930687Syn2-11.76m εDy15499.985.751
 11.76mαTb1500.024.042
meta state 0.320MeVSyn8+3.1mαTb150<0.0014.362
 3.1mITHo154~00.320
 3.1m εDy154 6.071
Ho155154.929188Syn5/2+48m εDy155 3.102
Ho156155.9389Syn4+56m εDy156 5.060
meta state 0.052MeVSyn1+9.5sITHo156 5.060
Ho157156.928290Syn7/2-12.6m εDy157 2.540
Ho158157.928991Syn5+11.3m εDy158 4.230
meta state 0.067MeVSyn2-28mIT >810.067
 28m εDy158<194.297
meta state 0.180MeVSyn9+21.3m εDy158>=934.410
 21.3mIT <=70.180
Ho159158.927792Syn7/2-33.05m εDy159 1.838
meta state 0.206MeVSyn1/2+8.3sIT  0.206
Ho160159.928793Syn5+25.6m εDy160 3.290
meta state 0.060MeVSyn2-5.02hIT 650.060
 5.02h εDy160353.350
meta state 0.169MeVSyn9+3sIT  0.170
Ho161160.927994Syn7/2-2.48h εDy161 0.859
meta state 0.211MeVSyn1/2+6.76sIT  0.211
Ho162161.929195Syn1+15m εDy162 2.140
meta state 0.106MeVSyn6-67mIT 620.106
 67m εDy162382.246
Ho163162.928796Syn7/2-4570y εDy163 0.003
meta state 0.297MeVSyn1/2+1.09sIT  0.298
Ho164163.930297Syn1+29m εDy164600.987
 29m β-Er164400.962
meta state 0.140MeVSyn6-37.5mIT  0.140
Ho165164.930398100.7/2-Stable 
Ho166165.932399Syn0-26.83h β-Er166 1.855
meta state 0.006MeVSyn7-1200y β-Er166 1.861
Ho167166.9331100Syn7/2-3.1h β-Er167 1.007
Ho168167.9355101Syn3+2.99m β-Er168 2.910
meta state 0.059MeVSyn6+132sIT >=99.50.059
 132s β-Er168<=0.52.969
Ho169168.9369102Syn7/2-4.7m β-Er169 2.124
Ho170169.9396103Syn6+2.76m β-Er170 3.870
meta state 0.120MeVSyn1+43s β-Er170 3.990
Ho171170.941104Syn7/2-53s β-Er171 3.200
Ho172 105Syn 25s    
Ho173 106Syn      
Ho174 107Syn      
Ho175 108Syn      
NuclidePotential Parent Nuclides
Ho141None known
Ho142None known
Ho143None known
Ho144None known
Ho145None known
Ho146Er146 (Syn)
Ho147Er147 (Syn) Er147m (Syn)
Ho148Er148 (Syn) Tm149 (Syn)
meta state 0.000MeVNone known
Ho149Er149 (Syn) Er149m (Syn) Tm153 (Syn) Tm153m (Syn)
meta state 0.049MeVNone known
Ho150Er150 (Syn) Tm154 (Syn) Tm154m (Syn)
meta state 0.800MeVNone known
Ho151Er151 (Syn) Er151m (Syn) Tm155 (Syn) Tm155m (Syn)
meta state 0.041MeVNone known
Ho152Er152 (Syn) Tm156 (Syn) Tm156m (Syn)
meta state 0.160MeVNone known
Ho153Er153 (Syn)
meta state 0.068MeVNone known
Ho154Er154 (Syn) Ho154m (Syn)
meta state 0.320MeVNone known
Ho155Er155 (Syn)
Ho156Er156 (Syn) Ho156m (Syn)
meta state 0.052MeVNone known
Ho157Er157 (Syn)
Ho158Er158 (Syn)
meta state 0.067MeVNone known
meta state 0.180MeVNone known
Ho159Er159 (Syn)
meta state 0.206MeVNone known
Ho160Er160 (Syn)
meta state 0.060MeVNone known
meta state 0.169MeVNone known
Ho161Er161 (Syn)
meta state 0.211MeVNone known
Ho162None known
meta state 0.106MeVNone known
Ho163Er163 (Syn)
meta state 0.297MeVNone known
Ho164None known
meta state 0.140MeVNone known
Ho165Dy165 (Syn) Dy165m (Syn) Er165 (Syn)
Ho166Dy166 (Syn)
meta state 0.006MeVNone known
Ho167Dy167 (Syn)
Ho168Dy168 (Syn)
meta state 0.059MeVNone known
Ho169Dy169 (Syn)
Ho170None known
meta state 0.120MeVNone known
Ho171None known
Ho172None known
Ho173None known
Ho174None known
Ho175None 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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