Californium is so expensive because it takes a lot of work and time to create. It is listed as one of the most expensive substances in the world.
Plutonium is very expensive but tritium, carbon as diamond and californium-252 are more expensive.
Californium is not flammable.
Probably californium has a silvery white appearance but the pure metal was not obtained.
Californium is a solid metal.
Because californium is very radioactive I suppose that a piece of californium is hot.
Californium is a very rare and expensive man made metal. But because it is a strong radioactive element californium can be an environmental hazard in the case of an accident.
The most expensive resource in the world is Californium. It's about 27 Million $ per gram.
Plutonium is very expensive but tritium, carbon as diamond and californium-252 are more expensive.
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.
Californium is not flammable.
Californium is a metal.