Californium is a radioactive metallic chemical element with the symbol Cf and atomic number 98.
From the en.wikipedia.org
Californium is one of the highest atomic mass elements to have been produced in weighable amounts.
From the en.wikipedia.org
In December 1949, the team found element 97, berkelium, and in February 1950, element 98, californium.
From the latimes.com
Calcium ions travel down the accelerator at a high velocity toward the rotating californium target.
From the sciencedaily.com
Putting the californium on the moving train improved the accuracy by about a factor of 10, Dr. Ono said.
From the nytimes.com
In Anniversaries, californium should not be capitalized.
From the en.wikipedia.org
Californium is only slightly radioactive, so the toy train did not glow green after its ride in the fusion reactor.
From the nytimes.com
As occasional collisions occurred between the oxygen and californium nuclei, they fused and formed the heavier nucleus of element 106-but not for long.
From the time.com
By firing calcium-48 nuclei at a target made of californium-245, scientists at Lawrence Livermore National Laboratory in California have made element 118, the heaviest yet.
From the newscientist.com
More examples
A radioactive transuranic element; discovered by bombarding curium with alpha particles
Californium is a synthetic radioactive metallic chemical element in the actinide series with the symbol Cf and atomic number 98. The element was first produced in 1950 by bombarding curium with alpha particles (helium ions) at the University of California at Berkeley. ...
A transuranic chemical element (symbol Cf) with an atomic number of 98
Symbol:"Cf" Atomic Number:"98" Atomic Mass: (251)amu. Californium is one of the elements in the actinide series of inner transition elements. It may also be classified as a rare earth element. It is a very radioactive element and you might find it used in medicine. ...