Atomic Weights and Isotopic Compositions for Strontium
 Isotope   Relative
Atomic Mass 		    Isotopic
  Composition  		 Standard
Atomic Weight 		  Notes 
 
38 Sr 84   83.913 4191(13)   0.0056(1)    87.62(1) g,r
86   85.909 2606(12)   0.0986(1)
87   86.908 8775(12)   0.0700(1)
88   87.905 6125(12)   0.8258(1)

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