Atomic Weights and Isotopic Compositions for Copper
 Isotope   Relative
Atomic Mass 		    Isotopic
  Composition  		 Standard
Atomic Weight 		  Notes 
 
29 Cu 63   62.929 597 72(56)   0.6915(15)    63.546(3) r
65   64.927 789 70(71)   0.3085(15)

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