Actinide SeriesActinide Series

Rare earth metalsRare earth metals

ThThThoriumThorium

Subcritical nuclear fuelSubcritical nuclear fuel Gas lantern mantlesGas lantern mantles

PaPaProtactiniumProtactinium

UUUraniumUranium

Found in ore Pitchblende Found in ore Pitchblende Ceramic glazeCeramic glaze Nuclear fuelNuclear fuel Nuclear weaponsNuclear weapons Depleted uranium for armor and Depleted uranium for armor and

armor piercing shellsarmor piercing shells

NpNpNeptuniumNeptunium

PuPuPlutoniumPlutonium

A bomb coreA bomb core Spacecraft propulsionSpacecraft propulsion Not particularly toxic unless ingested Not particularly toxic unless ingested

or inhaledor inhaled

AmAmAmericiumAmericium

Smoke detectorsSmoke detectors

CmCmCuriumCurium

Named after Marie and Pierre CurieNamed after Marie and Pierre Curie

BkBkBerkeliumBerkelium

Named after Berkeley, CaliforniaNamed after Berkeley, California

CfCfCaliforniumCalifornium

Named after CaliforniaNamed after California

EsEsEinsteiniumEinsteinium

Named after Norman EinsteinNamed after Norman Einstein

FmFmFermiumFermium

Named after Enrico FermiNamed after Enrico Fermi

MdMdMendeleviumMendelevium

Named after Dmitri MendeleevNamed after Dmitri Mendeleev

NoNoNobeliumNobelium

Named after Alfred NobelNamed after Alfred Nobel

LrLrLawrenciumLawrencium

Named after Ernest Orlando Named after Ernest Orlando Lawrence, inventor of the cyclotronLawrence, inventor of the cyclotron