IPA: /ˌkælɪˈfɔːrniəm/
KK: /kælɪˈfɔːrniəm/
A man-made chemical element that is radioactive and has the atomic number 98. It is created by bombarding curium with helium isotopes and is known for emitting alpha particles.
Californium is used in some nuclear reactors and for neutron activation analysis.
Californium is named after the state of California, where it was first synthesized, combined with the suffix '-ium' (used in chemistry to denote metallic elements). The name reflects both its geographical origin and its classification as a chemical element.
Think of California as the place where this element was discovered, and remember that the '-ium' ending indicates it is a metal.