Atomic Weights and Isotopic Compositions for Magnesium
 Isotope   Relative
Atomic Mass 		    Isotopic
  Composition  		 Standard
Atomic Weight 		  Notes 
 
12 Mg 24   23.985 041 697(14)   0.7899(4)  [24.304, 24.307]  
25   24.985 836 976(50)   0.1000(1)
26   25.982 592 968(31)   0.1101(3)

[skip navigation] National Institute of Standards and Technology NIST Physical Measurement Laboratory NIST Physical Measurement LaboratoryAtomic Weights and Isotopic Compositions Main Page