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Naturally occuring lithium consists of two isotopes whose atomic weights are 6.015 u and 7.016 u. The atomic weight of natural lithium is 6.491 u. The percentage by number of atoms of each isotpe in natural lithium is and respectively.

Answer» Naturally occuring lithium consists of two isotopes whose atomic weights are 6.015 u and 7.016 u. The atomic weight of natural lithium is 6.491 u. The percentage by number of atoms of each isotpe in natural lithium is and respectively.


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