Foundation
Physics Foundation
Sources of Energy
Question
Which of the following isotope of uranium is unstable ?
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Solution
All isotopes of uranium are radioactive (unstable) because uranium has an atomic number of 92, which is greater than 83. Elements with atomic numbers above 83 have no stable isotopes. Therefore, U-234, U-235, and U-238 are all unstable and undergo radioactive decay.
Final Answer: All the above