Californium is a radioactive chemical element with the symbol Cf and atomic number 98. It is an actinide element, discovered in 1950 at the University of California, Berkeley. Californium is a soft, silvery-white metal that is malleable and ductile. It
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Californium is a synthetic chemical element; it has symbol Cf and atomic number 98. It was first synthesized in 1950 at Lawrence Berkeley National Laboratory by bombarding curium with alpha particles. It is an actinide element, the sixth transuranium element to be synthesized, and has the second-highest atomic mass of all elements that have been produced in amounts large enough to see with the naked eye. It was named after the university and the U.S. state of California.