Californium is an artificial element; but infinitesimal amounts of natural californium can exist in uranium ores.
At room temperature californium is a solid metal.
Californium is able to form a critical mass.
Californium is a metal.
Cf from CaliFornium
Californium is placed in the family of actinoids.
At room temperature californium is a solid metal.
Californium is a man made chemical element.
At room temperature californium is a solid metal.
Californium does not occur naturally. It is produced as a result of nuclear explosions and nuclear experiments.
Californium is an artificial element; the natural element exist only in infinitesimal traces in uranium ores.
At room temperature californium is a solid metal.
Not californium, but neutrons emitted by californium.
Californium is radioactive and a strong neutrons emitter; californium can be lethal.
Californium is able to form a critical mass.
Californium is not flammable.
Californium is a metal.
Californium is not crucial.