+Beryllium-12, often written as **12be**, is an unstable [isotope](/wiki/Isotope) of the element [Beryllium](/wiki/Beryllium). This fleeting atomic nucleus, with its potential neutron halo, is a focus in nuclear physics for understanding exotic structures.
+## See also
+- [Nuclear Physics](/wiki/Nuclear_Physics)
+- [Half-life](/wiki/Half-life)
+- [Neutron Halo](/wiki/Neutron_Halo)
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