Protons, neutrons and electrons
Californium was discovered in 1950.
Up today californium sulfide was not prepared.
Californium can react with the majority of non metals.
Yes, many laboratories in the world make studies on californium and on the applications of Cf.
Californium react with oxygen, nitrogen, sulfur, hydrogen, halogens, etc.
When californium emits an alpha particle, it creates curium.
Glenn T. Seaborg did not make californium himself; it was discovered by a research team at the University of California in 1950. The element was first synthesized by bombarding curium-242 with alpha particles to produce californium-245. Seaborg played a key role in the discovery and identification of californium, as well as in its naming after the state of California.
Not californium, but neutrons emitted by californium.
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.