- Source: Isotopes of francium
Francium (87Fr) has no stable isotopes, thus a standard atomic weight cannot be given. Its most stable isotope is 223Fr with a half-life of 22 minutes, occurring in trace quantities in nature as an intermediate decay product of 235U.
Of elements whose most stable isotopes have been identified with certainty, francium is the most unstable. All elements with atomic number of 106 (seaborgium) or greater have most-stable-known isotopes shorter than that of francium, but as those elements have only a relatively small number of isotopes discovered, the possibility remains that undiscovered isotopes of these elements may have longer half-lives.
List of isotopes
References
Half-life, spin, and isomer data selected from the following sources.
Audi, Georges; Bersillon, Olivier; Blachot, Jean; Wapstra, Aaldert Hendrik (2003), "The NUBASE evaluation of nuclear and decay properties", Nuclear Physics A, 729: 3–128, Bibcode:2003NuPhA.729....3A, doi:10.1016/j.nuclphysa.2003.11.001
National Nuclear Data Center. "NuDat 2.x database". Brookhaven National Laboratory.
Holden, Norman E. (2004). "11. Table of the Isotopes". In Lide, David R. (ed.). CRC Handbook of Chemistry and Physics (85th ed.). Boca Raton, Florida: CRC Press. ISBN 978-0-8493-0485-9.
Kata Kunci Pencarian:
- Fransium
- Isotop fransium
- Astatin
- Isotop astatin
- Tabel periodik
- Radon-222
- Kalium
- Hidrogen
- Karbon
- Xenon
- Isotopes of francium
- Francium
- Ununennium
- Alkali metal
- Nuclide
- Isotopes of radium
- List of radioactive nuclides by half-life
- Isotopes of astatine
- Stable nuclide
- Chemical symbol
