Assertion: fluorine's density | /r/HasProperty | valence −1
Facets:
Source sentences:
text: °C; density 1.696 grams per liter at STP; valence −1.
text: °C; density 1.696 grams per liter at STP; valence −1.
text: °C;; density 1.696 grams per liter at STP; valence −1.