Californium

Californium is a radioactive chemical element with symbol Cf and atomic number 98. The element was first synthesized in 1950 at the Lawrence Berkeley National Laboratory (then the University of California Radiation Laboratory), by bombarding curium with alpha particles (helium-4 ions).

Atomic mass:(251.0) amu

Melting point:Unknown

Boiling point:Unknown

Density:293 K:Unknown