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Isotopes of polonium

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There are 42 isotopes of polonium (84Po). They range in size from 186 to 227 nucleons. They are all radioactive. 210Po with a half-life of 138.376 days has the longest half-life of any naturally-occurring isotope of polonium and is the most common isotope of polonium. It is also the most easily synthesized polonium isotope. 209Po, which does not occur naturally, has the longest half-life of all isotopes of polonium at 124 years. 209Po can be made by using a cyclotron to bombard bismuth with protons, as can 208Po.[2]

Quick Facts Main isotopes, Decay ...
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List of isotopes


More information Nuclide, Historic name ...
  1. [n 1]
    mPo – Excited nuclear isomer.
  2. [n 2]
    ( ) – Uncertainty (1σ) is given in concise form in parentheses after the corresponding last digits.
  3. [n 3]
    # – Atomic mass marked #: value and uncertainty derived not from purely experimental data, but at least partly from trends from the Mass Surface (TMS).
  4. [n 4]
    Bold italics symbol as daughter – Daughter product is nearly stable.
  5. [n 5]
    Bold symbol as daughter – Daughter product is stable.
  6. [n 6]
    ( ) spin value – Indicates spin with weak assignment arguments.
  7. [n 7]
    # – Values marked # are not purely derived from experimental data, but at least partly from trends of neighboring nuclides (TNN).
  8. [n 8]
    Order of ground state and isomer is uncertain.
  9. [n 9]
    Most common isotope
  10. [N 10]
    Intermediate decay product of 238U
  11. [N 11]
    Intermediate decay product of 235U
  12. [N 12]
    Intermediate decay product of 232Th
  13. [N 13]
    Intermediate decay product of 237Np
  14. [N 14]
    Theoretically capable of β−β− decay to 216Rn[1]
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See also

Daughter products other than polonium

References

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