Assertion: californium | /r/HasProperty | atomic number
Facets:
Source sentences:
text: Californium (Cf), synthetic chemical element of the actinoid series of the periodic table, atomic number 98.
text: Californium (symbol: Cf; atomic number: 98) is a radioactive metallic and actinide element made by the bombardment of curium with helium-4 atoms (i.e., alpha particles).