Question
The atomic mass of lithium on a four-significant-figure periodic table is 6.941 amu. Lithium has two natural isotopes with atomic masses of 6.10512 amu and 7.01600 amu. Calculate the percentage distribution between the two isotopes.
Step 1
10512 amu as \(x\), and the percentage of the isotope with atomic mass 7.01600 amu as \(1-x\). Show more…
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The atomic weight of lithium is $6.941$ amu. The two naturally occurring isotopes of lithium have the following masses: ${ }^{6} \mathrm{Li}, 6.01512$ amu; ${ }^{7} \mathrm{Li}, 7.01600$ amu. Calculate the percent of ${ }^{6} \mathrm{Li}$ in naturally occurring lithium.
The average atomic weight of lithium is 6.941 amu. The two naturally occurring isotopes of lithium have the following masses: $^{6} \mathrm{Li}, 6.01512 \mathrm{amu} ;^{7} \mathrm{Li}, 7.01600$ amu. Calculate the percent abundance of $^{6} \mathrm{Li}$ and $^{7} \mathrm{Li}$ in naturally occurring lithium.
Lithium has two isotopes, ${ }^{6} \mathrm{Li}$ and ${ }^{7} \mathrm{Li}$ of isotopic masses 6.015 and 7.016 respectively. The atomic mass of lithium is $6.941 .$ Calculate the natural abundance of the two isotopes.
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