Periodic Table of Elements

Tc - Technetium

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Nuclides / Isotopes

SpinHalf LifeDMDTBR
Tc8685.94343Syn >150ns    
Tc8887.93345Syn6, 7, 86.4sεMo88 10.100
meta state 0.000MeVSyn2, 35.8sεMo88 10.100
Tc8988.92846Syn9/2+12.8sεMo89 7.510
meta state 0.000MeVSyn1/2-12.9sεMo89 7.510
Tc9089.92447Syn8+49.2sεMo90 9.100
meta state 0.500MeVSyn1+8.7sεMo90 9.600
Tc9190.91848Syn9/2+3.14mεMo91 6.220
meta state 0.350MeVSyn1/2-3.3mITTc91<10.350
 3.3mεMo91 6.570
Tc9291.915349Syn8+4.23mεMo92 7.870
Tc9392.910350Syn9/2+2.75hεMo93 3.201
meta state 0.391MeVSyn1/2-43.5mIT 76.60.392
meta state 2.185MeVSyn17/2-10.2usIT  2.185
Tc9493.909751Syn7+293mεMo94 4.256
meta state 0.075MeVSyn2+52mITTc94<0.10.075
 52mεMo94 4.331
Tc9594.907752Syn9/2+20hεMo95 1.691
meta state 0.038MeVSyn1/2-61dεMo9596.121.730
 61dIT 3.880.039
Tc9695.907953Syn7+4.28dεMo96 2.973
meta state 0.034MeVSyn4+51.5mIT 980.034
Tc9796.906454Syn9/2+2600000yεMo97 0.320
meta state 0.097MeVSyn1/2-90.1dεMo97<0.340.417
 90.1dIT  0.097
Tc9897.907255Syn6+4200000yβ-Ru98 1.796
Tc9998.906356Syn9/2+211100yβ-Ru99 0.294
meta state 0.143MeVSyn1/2-6.01hβ-Ru990.00370.437
 6.01hIT  0.143
 15.8sβ-Ru100 3.202
Tc101100.907358Syn9/2+14.22mβ-Ru101 1.614
Tc102101.909259Syn1+5.28sβ-Ru102 4.530
meta state 0.000MeVSyn4, 54.35mβ-Ru102984.530
 4.35mIT 2 
Tc103102.909260Syn5/2+54.2sβ-Ru103 2.660
Tc104103.911461Syn3+18.3mβ-Ru104 5.600
Tc105104.911762Syn5/2+7.6mβ-Ru105 3.640
Tc106105.914463Syn1, 235.6sβ-Ru106 6.547
Tc107106.91564Syn 21.2sβ-Ru107 4.820
Tc108107.91865Syn2+5.17sβ-Ru108 7.720
Tc109108.9266Syn 0.87sβ-Ru109 5.990
Tc110109.92367Syn1+, 2+0.92sβ-Ru110 8.800
Tc111110.92568Syn 0.3sβ-Ru111 7.000
Tc112111.92969Syn 0.28sβ-Ru112 10.000
Tc113112.93170Syn 130msβ-Ru113 8.200
Tc114113.93671Syn >150ns    
Tc115114.93872Syn >150ns    
NuclidePotential Parent Nuclides
Tc85None known
Tc86None known
Tc87None known
Tc88None known
meta state 0.000MeVNone known
Tc89None known
meta state 0.000MeVNone known
Tc90Ru90 (Syn)
meta state 0.500MeVNone known
Tc91Ru91 (Syn) Ru91m (Syn) Tc91m (Syn)
meta state 0.350MeVNone known
Tc92Ru92 (Syn)
Tc93Ru93 (Syn) Ru93m (Syn)
meta state 0.391MeVNone known
meta state 2.185MeVNone known
Tc94Ru94 (Syn) Tc94m (Syn)
meta state 0.075MeVNone known
Tc95Ru95 (Syn)
meta state 0.038MeVNone known
Tc96None known
meta state 0.034MeVNone known
Tc97Ru97 (Syn)
meta state 0.097MeVNone known
Tc98None known
Tc99mMo99 (Syn)
meta state 0.143MeVNone known
Tc100None known
Tc101Mo101 (Syn)
Tc102Mo102 (Syn)
meta state 0.000MeVNone known
Tc103Mo103 (Syn)
Tc104Mo104 (Syn)
Tc105Mo105 (Syn)
Tc106Mo106 (Syn)
Tc107Mo107 (Syn)
Tc108Mo108 (Syn)
Tc109Mo109 (Syn)
Tc110Mo110 (Syn)
Tc111None known
Tc112None known
Tc113None known
Tc114None known
Tc115None 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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