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Periodic Table of Elements

Kr - Krypton

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Nuclides / Isotopes

Nuc-
lide		Atomic
Mass		NNAbun
%		SpinHalf LifeDMDTBR
%		Decay
Energy
(MeV)
Kr6968.96533Syn      
Kr7069.95634Syn0+     
Kr7170.95135Syn 64ms ε + PSe705.28.600
 64ms εBr71 10.500
Kr7271.94236Syn0+17.2s εBr72 5.040
Kr7372.93937Syn5/2-27s ε + PSe720.683.720
 27s εBr73 6.670
Kr7473.933338Syn0+11.5m εBr74 3.140
Kr7574.93139Syn5/2+4.3m εBr75 4.899
Kr7675.925940Syn0+14.8h εBr76 1.311
Kr7776.924741Syn5/2+74.4m εBr77 3.063
Kr7877.9204420.350+Stable 
Kr7978.920143Syn1/2-35.04h εBr79 1.626
meta state 0.130MeVSyn7/2+50sIT  0.130
Kr8079.9164442.250+Stable 
Kr8180.916645Syn7/2+229000y εBr81 0.281
meta state 0.190MeVSyn1/2-13.1s εBr810.00250.472
 13.1sIT  0.191
Kr8281.91354611.60+Stable 
Kr8382.91414711.59/2+Stable 
meta state 0.042MeVSyn1/2-1.83hIT  0.042
Kr8483.91154857.0+Stable 
Kr8584.912549Syn9/2+10.756y β-Rb85 0.687
meta state 0.305MeVSyn1/2-4.480h β-Rb8578.60.992
 4.480hIT 21.40.305
Kr8685.91065017.30+Stable 
Kr8786.913451Syn5/2+76.3m β-Rb87 3.887
Kr8887.914452Syn0+2.84h β-Rb88 2.914
Kr8988.917653Syn2+, 5/2+3.15m β-Rb89 4.990
Kr9089.919554Syn0+32.32s β-Rb90 4.392
Kr9190.923455Syn5/2+8.57s β-Rb91 6.440
Kr9291.926256Syn0+1.840s β- + NRb910.030.889
 1.840s β-Rb92 5.987
Kr9392.93157Syn1/2+1.286s β- + NRb921.952.680
 1.286s β-Rb93 8.600
Kr9493.93458Syn0+0.2s β- + NRb935.73.400
 0.2s β-Rb94 7.300
Kr9594.9459Syn1/20.78s β-Rb95 9.800
Kr9695.94360Syn0+     
Kr9796.94961Syn3/2+>150ns β-Rb97  
NuclidePotential Parent Nuclides
Kr69None known
Kr70None known
Kr71None known
Kr72None known
Kr73None known
Kr74Rb74 (Syn) Sr75 (Syn)
Kr75Rb75 (Syn)
Kr76Rb76 (Syn) Sr77 (Syn)
Kr77Rb77 (Syn)
Kr78Br78 (Syn) Rb78 (Syn) Rb78m (Syn)
Kr79Rb79 (Syn)
meta state 0.130MeVNone known
Kr80Br80 (Syn) Rb80 (Syn)
Kr81Rb81 (Syn) Rb81m (Syn)
meta state 0.190MeVNone known
Kr82Br82 (Syn) Br82m (Syn) Rb82 (Syn) Rb82m (Syn) Se82 (Natural)
Kr83Br83 (Syn) Rb83 (Syn)
meta state 0.042MeVNone known
Kr84Br84 (Syn) Br84m (Syn) Rb84 (Syn)
Kr85Br85 (Syn)
meta state 0.305MeVNone known
Kr86Br86 (Syn) Br87 (Syn) Rb86 (Syn)
Kr87Br87 (Syn) Br88 (Syn)
Kr88Br88 (Syn) Br89 (Syn)
Kr89Br89 (Syn) Br90 (Syn)
Kr90Br90 (Syn) Br91 (Syn)
Kr91Br91 (Syn) Br92 (Syn)
Kr92Br92 (Syn) Br93 (Syn)
Kr93Br93 (Syn) Br94 (Syn)
Kr94Br94 (Syn)
Kr95None known
Kr96None known
Kr97None 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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