no one knows what the hell that is
The density of californium at room temperature is 15,1 g/cm3.
Californium is a synthetic element with the atomic number 98 and symbol Cf. It is a radioactive metal that is typically produced in nuclear reactors. At room temperature, Californium would likely be in a solid state, as most metals are solid at room temperature.
That would be Cf which is californium
Not californium, but neutrons emitted by californium.
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All the isotopes of californium are radioactive, artificial and unstable.
Californium is radioactive and a strong neutrons emitter; californium can be lethal.
Californium has 98 protons.
Californium is a metal.
Californium is not flammable.
Californium is not crucial.