Atomic Weights and Isotopic Compositions for Krypton
 Isotope   Relative
Atomic Mass
 
   Isotopic
  Composition  
Standard
Atomic Weight
 
 Notes 
 
36 Kr 78   77.920 364 94(76)   0.003 55(3)    83.798(2) g,m
80   79.916 378 08(75)   0.022 86(10)
82   81.913 482 73(94)   0.115 93(31)
83   82.914 127 16(32)   0.115 00(19)
84   83.911 497 7282(44)   0.569 87(15)
86   85.910 610 6269(41)   0.172 79(41)

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