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stable
unstable, think about it.
Unstable.
no because it is so radioative its so unstable.
Some isotopes are stable, others are unstable.
is peru government stable or unstable
unstable
the unstable nucleus will decay into smaller, stable particles.
It is stable
stable
stable
The nuclei of a stable radioactive isotope will after been bombarded with a neutron produce a radiation and enormous energy and such reaction will come to an end, while the nuclei of an unstable nuclei will continue to react with little fragment of the neutron continuously (long chain nuclear reaction) until it has attain it stable phase.mind you this reaction with the little fragment of this neutron can last over 10 years.
stable
Chlorine is stable.
phosphorus is not stable
cuba is stable
the antonym of stable is unstable