Assertion: krypton | /r/HasAspect | 6 stable isotopes
Facets:
Source sentences:
text: Krypton has 6 stable isotopes: 78Kr, 80Kr, 82Kr, 83Kr, 84Kr, and 86Kr.
text: Krypton already has 8 elections in its valence shell, and hence stable needing no more or less elections.
text: Krypton has 6 stable isotopes.