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Two stable isotopes of lithium and have respective abundances of 7.5% and 92.5%. These isotopes have masses 6.01512 u and 7.01600 u, respectively. Find the atomic mass of lithium.

Two stable isotopes of lithium and have respective abundances of 7.5% and 92.5%. These isotopes have masses 6.01512 u and 7.01600 u, respectively. Find the atomic mass of lithium.

Grade:12

2 Answers

Chetan Mandayam Nayakar
312 Points
9 years ago

answer=((7.5*6.01512)+(92.5*7.01600))/100

lokesh soni
37 Points
9 years ago

(6.01512*7.5/100)+(7.01600*92.5/100)=6.940934

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