[يآآرب]

25. The atomic masses of 6Li and 7Li are 6.0151 amu and 7.0160 amu, respectively. Calculate the natural abundance
of these two isotopes. The average atomic mass of Lithium (Li=6.941 amu).
a)
6
Li= 7.49% ,
7
Li= 92.51%
b)
7
Li= 7.49% ,
6
Li= 92.51%
c)
6
Li= 8.49% ,
7
Li= 95.51%
d)
7
Li= 7.22% ,
6
Li= 82.51%



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