Atomic Weights and Isotopic Compositions for Radium
 Isotope   Relative
Atomic Mass 		    Isotopic
  Composition  		 Standard
Atomic Weight 		  Notes 
 
88 Ra 223 223.018 5023(27)     [226]  
224 224.020 2120(23)   
226 226.025 4103(25)   
228 228.031 0707(26)   

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