Question
Medium
Solving time: 5 mins
(a) 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.
(b) Boron has two stable isotopes, and . Their respective masses are 10.01294 u and 11.00931 u, and the atomic mass of boron is 10.811 u. Find the abundances of and B.
(b) Boron has two stable isotopes, and . Their respective masses are 10.01294 u and 11.00931 u, and the atomic mass of boron is 10.811 u. Find the abundances of and B.
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Text solutionVerified
(a)The atomic mass is given by,
(b) Mass of
Mass of
Let the abundance percentage of isotopes of boron, and
The atomic mass of Boron,
So,
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Question Text | (a) 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. (b) Boron has two stable isotopes, and . Their respective masses are 10.01294 u and 11.00931 u, and the atomic mass of boron is 10.811 u. Find the abundances of and B. |
Updated On | May 18, 2022 |
Topic | Nuclei |
Subject | Physics |
Class | Class 12 |
Answer Type | Text solution:1 Video solution: 5 |
Upvotes | 641 |
Avg. Video Duration | 7 min |