Column Descriptions

                                                                         
             Relative           Isotopic      Standard                   
Isotope      Atomic Mass        Composition   Atomic Weight    Notes     
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3   Li  6    6.0151228874(16)   0.0759(4)     [6.938,6.997]    m
        7    7.0160034366(45)   0.9241(4)   
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