Atomic Weights and Isotopic Compositions for Lead
 Isotope   Relative
Atomic Mass 		    Isotopic
  Composition  		 Standard
Atomic Weight 		  Notes 
 
82 Pb 204 203.973 0440(13)   0.014(1)  207.2(1) g,r
206 205.974 4657(13)   0.241(1)
207 206.975 8973(13)   0.221(1)
208 207.976 6525(13)   0.524(1)

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