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Uranium-241
April 17 , 2023
618 days
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- Physicists in Japan discovered a previously unknown isotope of uranium.
- The new isotope, uranium-241, has 92 protons and 149 neutrons.
- This discovery of a new neutron-rich uranium isotope is the first since 1979.
- Theoretical calculations suggest it could have a half-life of 40 minutes.
- Uranium is in the class of elements in the periodic table known as “actinides’’.
- All actinides are radioactive, but uranium is one of the four most radioactive elements.
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