Assertion: decay's neutron | /r/HasProperty | described
Facets:
value: previously
type: TEMPORAL
Source sentences:
text: ( (\ce{^{1}_{1}p}\), also represented by the symbol \(\ce{^1_1H})\) and neutrons \( (\ce{^1_0n})\) are the constituents of atomic nuclei, and have been described previously.