Assertion: silicon's isotope | /r/HasProperty | stable
Facets:
Source sentences:
text: Natural silicon is comprised of three stable isotopes: 28Si, 29Si and 30Si.
text: (the most abundant isotope, at 92.23%), Si-29 (4.67%), and Si-30 (3.1%) are stable; Si-32 is a radioactive isotope produced by argon decay.