Living Person

Isotopes_of_caesium
is

As of April 19, 2026

1376 years old
approximately!

Date of Birth

(650 ) is

Dog
Year

* Calculated from Wikipedia data.
Accuracy is not guaranteed.

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Isotopes of caesium (55Cs)
Main isotopes Decay
Isotope abun­dance half-life (t1/2) mode pro­duct
Cs synth 9.69 d ε Xe
Cs 100% stable
Cs synth 2.0650 y β Ba
ε Xe
Cs trace 1.33×10 y β Ba
Cs synth 30.04 y β Ba
Standard atomic weight Ar°(Cs)
  • 132.90545196±0.00000006
  • 132.91±0.01 (abridged)
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