Assertion: astatine's isotope | /r/CapableOf | undergo 3 alpha decays
Facets:
value: before fission
type: TEMPORAL
Source sentences:
text: In January 2010, scientists at the Flerov Laboratory of Nuclear Reactions announced internally that they had detected the decay of a new element with atomic number 117 via two decay chains: one of an odd–odd isotope undergoing 6 alpha decays before spontaneous fission, and one of an odd–even isotope undergoing 3 alpha decays before fission.