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NIST Atomic Weights and Isotopic Compositions with Relative Atomic Masses
The atomic weights are available for elements 1 through 118 and isotopic compositions or abundances are given when appropriate. Version 3.0. -
NIST Atomic Weights and Isotopic Compositions with Relative Atomic Masses
The atomic weights are available for elements 1 through 118 and isotopic compositions or abundances are given when appropriate. Version 3.0.