Assertion: californium's isotope | /r/HasProperty | synthesized
Facets:
Source sentences:
text: The first isotope to be synthesized was 245Cf in 1950.
text: The first isotope to be synthesized was 245Cf in 1950.
text: Nineteen isotopes (mass 238–256) have been synthesized and observed.
text: Of the 20 isotopes of californium that have been synthesized, ranging in mass number from 237 to 256 the most stable are 251Cf (half-life 898 years), 249Cf (half-life 351 years), 250Cf (half-life 13.08 years), and 252Cf (half-life 2.65 years).