Periodic Table of Elements

Rb - Rubidium

Rubidium Menu

Nuclides / Isotopes

Nuc-
lide
Atomic
Mass
NNAbun
%
SpinHalf LifeDMDTBR
%
Decay
Energy
(MeV)
Rb7170.96534Syn      
Rb7271.95935Syn      
Rb7372.9536Syn      
Rb7473.94437Syn0+64.9msεKr74 10.400
Rb7574.938638Syn2-, 5/2-19sεKr75 7.020
Rb7675.935139Syn1-36.5sεKr76 8.500
Rb7776.930440Syn3/2-3.77mεKr77 5.346
Rb7877.928141Syn0+17.66mεKr78 7.224
meta state 0.103MeVSyn4-5.74mεKr78907.327
 5.74mIT 100.103
Rb7978.923142Syn5/2+22.9mεKr79 3.649
Rb8079.922543Syn1+34sεKr80 5.723
Rb8180.91944Syn3/2-4.576hεKr81 2.237
meta state 0.086MeVSyn9/2+30.5mIT 97.60.086
 30.5mεKr812.42.323
Rb8281.918245Syn1+1.273mεKr82 4.400
meta state 0.068MeVSyn5-6.472hITRb82<0.330.069
 6.472hεKr82 4.469
Rb8382.915146Syn5/2-86.2dεKr83 0.910
meta state Syn9/2+7.8msε   
 7.8msIT   
Rb8483.914447Syn2-32.77dεKr8496.22.681
 32.77dβ-Sr843.80.894
meta state 0.463MeVSyn6-20.26mIT  0.464
Rb8584.91184872.1655/2-Stable 
Rb8685.911249Syn2-18.631dβ-Sr8699.991.774
 18.631dεKr860.00520.519
meta state 0.556MeVSyn6-1.017mIT  0.556
Rb8786.90925027.8353/2-4.75E 10yβ-Sr87 0.283
Rb8887.911351Syn2-17.78mβ-Sr88 5.316
Rb8988.912352Syn3/2-15.15mβ-Sr89 4.501
Rb9089.914853Syn0-158sβ-Sr90 6.590
meta state 0.107MeVSyn3-258sβ-Sr9097.46.697
 258sIT 2.60.107
Rb9190.916554Syn3/2-58.4sβ-Sr91 5.861
Rb9291.919755Syn0-4.492sβ- + NSr910.010.763
 4.492sβ-Sr92 8.105
Rb9392.92256Syn5/2-5.84sβ- + NSr921.392.178
 5.84sβ-Sr93 7.462
Rb9493.926457Syn3-2.702sβ- + NSr9310.013.560
 2.702sβ-Sr94 10.307
Rb9594.929358Syn5/2-377.5msβ- + NSr948.734.932
 377.5msβ-Sr95 9.279
Rb9695.934359Syn2+0.199sβ- + NSr95145.861
 0.199sβ-Sr96 11.756
Rb9796.937360Syn3/2+169.9msβ- + NSr9625.16.540
 169.9msβ-Sr97 10.420
Rb9897.941761Syn1, 0114msβ- + NSr9713.66.460
 114msβ- + 2NSr960.052.570
 114msβ-Sr98 12.344
meta state 0270MeVSyn4, 596msβ-Sr98 12.614
 96msβ- + NSr97 6.730
Rb9998.94562Syn5/2+50.3msβ- + NSr9820.77.610
 50.3msβ-Sr99 11.250
Rb10099.9563Syn 51msβ- + NSr9967.400
 51msβ- + 2NSr980.1613.500
 51msβ-Sr100 13.500
Rb101100.95364Syn3/2+32msβ- + NSr100318.550
 32msβ-Sr101 11.810
Rb102101.95965Syn 37msβ- + NSr10118 
 37msβ-Sr102  
NuclidePotential Parent Nuclides
Rb71None known
Rb72None known
Rb73None known
Rb74None known
Rb75Sr75 (Syn)
Rb76Sr76 (Syn) Y77 (Syn)
Rb77Sr77 (Syn)
Rb78Sr78 (Syn) Y79 (Syn)
meta state 0.103MeVNone known
Rb79Sr79 (Syn)
Rb80Sr80 (Syn)
Rb81Sr81 (Syn)
meta state 0.086MeVNone known
Rb82Rb82m (Syn) Sr82 (Syn)
meta state 0.068MeVNone known
Rb83Sr83 (Syn)
meta state None known
Rb84None known
meta state 0.463MeVNone known
Rb85Kr85 (Syn) Kr85m (Syn) Sr85 (Syn) Sr85m (Syn)
Rb86None known
meta state 0.556MeVNone known
Rb87Kr87 (Syn) Sr87m (Syn)
Rb88Kr88 (Syn)
Rb89Kr89 (Syn)
Rb90Kr90 (Syn)
meta state 0.107MeVNone known
Rb91Kr91 (Syn) Kr92 (Syn)
Rb92Kr92 (Syn) Kr93 (Syn)
Rb93Kr93 (Syn) Kr94 (Syn)
Rb94Kr94 (Syn)
Rb95Kr95 (Syn)
Rb96None known
Rb97Kr97 (Syn)
Rb98None known
meta state 0270MeVNone known
Rb99None known
Rb100None known
Rb101None known
Rb102None 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)

Rubidium Menu

References

A list of reference sources used to compile the data provided on our periodic table of elements can be found on the main periodic table page.

Related Resources

Citing this page

If you need to cite this page, you can copy this text: