Atomic Weights and Isotopic Compositions for Lithium
Isotope
Relative
Atomic Mass
Isotopic
Composition
Standard
Atomic Weight
Notes
3
Li
6
6.015 122 8874(16)
0.0759(4)
[6.938, 6.997]
m
7
7.016 003 4366(45)
0.9241(4)