+Be1, or Beryllium-1, is an extremely unstable [Isotope](/wiki/Isotope) of the element [Beryllium](/wiki/Beryllium). This rare nuclide quickly decays, posing challenges for its direct observation and study in [Nuclear Physics](/wiki/Nuclear_Physics).
+## See also
+- [Atomic Nucleus](/wiki/Atomic_Nucleus)
+- [Radioactivity](/wiki/Radioactivity)
+- [Periodic Table](/wiki/Periodic_Table)