Periodic Table of Elements

Sr - Strontium

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Nuclides / Isotopes

Nuc-
lide
Atomic
Mass
NNAbun
%
SpinHalf LifeDMDTBR
%
Decay
Energy
(MeV)
Sr7372.96635Syn      
Sr7473.95636Syn0+     
Sr7574.9537Syn 71msε + PKr746.58.200
 71msεRb75 10.600
Sr7675.94238Syn0+8.9sεRb76 6.100
Sr7776.93839Syn5/2+9sε + PKr76<0.253.710
 9sεRb77 6.850
Sr7877.932240Syn0+2.5mεRb78 3.762
Sr7978.929741Syn3/2-2.25mεRb79 5.318
Sr8079.924542Syn0+106.3mεRb80 1.868
Sr8180.923243Syn1/2-22.3mεRb81 3.930
Sr8281.918444Syn0+25.55dεRb82 0.180
Sr8382.917645Syn7/2+32.41hεRb83 2.276
meta state 0.259MeVSyn1/2-4.95sIT  0.259
Sr8483.9134460.560+Stable 
Sr8584.912947Syn9/2+64.84dεRb85 1.065
meta state 0.239MeVSyn1/2-67.63mIT 86.60.239
 67.63mεRb8513.41.304
Sr8685.9093489.860+Stable 
meta state 2.955MeVSyn8+0.45usIT  2.956
Sr8786.9089497.9/2+Stable 
meta state 0.388MeVSyn1/2-2.803hIT 99.70.389
 2.803hεRb870.30.106
Sr8887.90565082.580+Stable 
Sr8988.907551Syn5/2+50.53dβ-Y89 1.495
Sr9089.907752Syn0+28.78yβ-Y90 0.546
Sr9190.910253Syn5/2+9.63hβ-Y91 2.699
Sr9291.91154Syn0+2.71hβ-Y92 1.911
Sr9392.91455Syn5/2+7.423mβ-Y93 4.137
Sr9493.915456Syn0+75.3sβ-Y94 3.511
Sr9594.919457Syn1/2+23.9sβ-Y95 6.080
Sr9695.921758Syn0+1.07sβ-Y96 5.371
Sr9796.926159Syn1/2+429msβ- + NY96<=0.051.488
 429msβ-Y97 7.467
Sr9897.928560Syn0+0.653sβ- + NY970.251.580
 0.653sβ-Y98 5.826
Sr9998.93361Syn3/2+0.269sβ- + NY980.12.190
 0.269sβ-Y99 8.030
Sr10099.93562Syn0+202msβ- + NY990.781.910
 202msβ-Y100 7.080
Sr101100.94163Syn5/2+118msβ- + NY1002.523.820
 118msβ-Y101 9.510
Sr102101.94364Syn0+69msβ- + NY1015.53.760
 69msβ-Y102 8.820
Sr103102.94965Syn      
Sr104103.95266Syn0+     
NuclidePotential Parent Nuclides
Sr73None known
Sr74None known
Sr75None known
Sr76None known
Sr77Y77 (Syn)
Sr78None known
Sr79Y79 (Syn)
Sr80Y80 (Syn) Zr81 (Syn)
Sr81Y81 (Syn)
Sr82Y82 (Syn) Zr83 (Syn)
Sr83Y83 (Syn) Y83m (Syn)
meta state 0.259MeVNone known
Sr84Rb84 (Syn) Y84 (Syn) Y84m (Syn)
Sr85Y85 (Syn) Y85m (Syn)
meta state 0.239MeVNone known
Sr86Rb86 (Syn) Y86 (Syn) Y86m (Syn)
meta state 2.955MeVNone known
Sr87Rb87 (Natural) Y87 (Syn) Y87m (Syn)
meta state 0.388MeVNone known
Sr88Rb88 (Syn) Y88 (Syn)
Sr89Rb89 (Syn)
Sr90Rb90 (Syn) Rb90m (Syn)
Sr91Rb91 (Syn) Rb92 (Syn)
Sr92Rb92 (Syn) Rb93 (Syn)
Sr93Rb93 (Syn) Rb94 (Syn)
Sr94Rb94 (Syn) Rb95 (Syn)
Sr95Rb95 (Syn) Rb96 (Syn)
Sr96Rb96 (Syn) Rb97 (Syn) Rb98 (Syn)
Sr97Rb97 (Syn) Rb98 (Syn) Rb98m (Syn)
Sr98Rb100 (Syn) Rb98 (Syn) Rb98m (Syn) Rb99 (Syn)
Sr99Rb100 (Syn) Rb99 (Syn)
Sr100Rb100 (Syn) Rb101 (Syn)
Sr101Rb101 (Syn) Rb102 (Syn)
Sr102Rb102 (Syn)
Sr103None known
Sr104None 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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