Actinide Series Rare earth metals

Th Thorium Subcritical nuclear fuel Subcritical nuclear fuel Gas lantern mantles Gas lantern mantles

Pa Protactinium

U Uranium Found in ore Pitchblende Found in ore Pitchblende Ceramic glaze Ceramic glaze Nuclear fuel Nuclear fuel Nuclear weapons Nuclear weapons Depleted uranium for armor and armor piercing shells Depleted uranium for armor and armor piercing shells

Np Neptunium

Pu Plutonium A bomb core A bomb core Spacecraft propulsion Spacecraft propulsion Not particularly toxic unless ingested or inhaled Not particularly toxic unless ingested or inhaled

Am Americium Smoke detectors Smoke detectors

Cm Curium Named after Marie and Pierre Curie Named after Marie and Pierre Curie

Bk Berkelium Named after Berkeley, California Named after Berkeley, California

Cf Californium Named after California Named after California

Es Einsteinium Named after Norman Einstein Named after Norman Einstein

Fm Fermium Named after Enrico Fermi Named after Enrico Fermi

Md Mendelevium Named after Dmitri Mendeleev Named after Dmitri Mendeleev

No Nobelium Named after Alfred Nobel Named after Alfred Nobel

Lr Lawrencium Named after Ernest Orlando Lawrence, inventor of the cyclotron Named after Ernest Orlando Lawrence, inventor of the cyclotron