actinides
Uranium's elemental family
Actinides are a series of fifteen metallic elements in the periodic table, ranging from actinium (atomic number 89) through lawrencium (atomic number 103).
They occupy the bottom row of the periodic table alongside the lanthanides and are characterized by the filling of their 5f electron orbitals.
The most familiar actinides are uranium and plutonium, both significant in nuclear energy and weapons.
All actinides are radioactive, with the heavier ones existing only as synthetic, short-lived isotopes produced in laboratories.
Actinide, atomic number ninety
- protactiniumActinide series element
- uraniumElement ninety-two
- neptuniumSynthetic radioactive metallic element
- plutoniumActinide, atomic number 94
americium · curium · berkelium · californium · einsteinium · fermium · lanthanides · periodic
Synthetic radioactive metallic element
- plutoniumActinide, atomic number 94
- americiumElement ninety-five, synthetic actinide
- curiumRadioactive actinide, atomic ninety-six
- berkeliumSynthetic actinide, atomic ninety-seven
californium · einsteinium · fermium · synthetic · man-made · cyclotron · bombardment · short-lived
Element ninety-two
- plutoniumActinide, atomic number 94
- thoriumActinide, atomic number ninety
- fuelEnergy source material
- reactorControlled fission apparatus
enrichment · breeder · fissile · fertile · criticality · moderator · reprocessing · centrifuge
Gradual organic breakdown
- half-lifePeriod for fifty-percent reduction
- alphaFirst Greek letter
- betaGreek alphabet's second letter
- gammaGreek alphabet's third
radiation · isotopes · fission · transmutation · radioactive · unstable · emissions · dosimetry
Implanted cardiac rhythm devices
- spacecraftVehicle for outer space
- thermoelectricHeat-to-electricity converting
- luminescentEmitting soft light
- radiotherapyMedical radiation for cancer
thorium
Actinide, atomic number ninety
- protactiniumActinide series element
- uraniumElement ninety-two
- neptuniumSynthetic radioactive metallic element
plutonium · americium · curium · berkelium · californium · einsteinium · fermium · lanthanides · periodic · series
neptunium
Synthetic radioactive metallic element
- plutoniumActinide, atomic number 94
- americiumElement ninety-five, synthetic actinide
- curiumRadioactive actinide, atomic ninety-six
berkelium · californium · einsteinium · fermium · synthetic · man-made · cyclotron · bombardment · short-lived · superheavy
uranium
Element ninety-two
reactor · enrichment · breeder · fissile · fertile · criticality · moderator · reprocessing · centrifuge · yellowcake
decay
Gradual organic breakdown
- half-lifePeriod for fifty-percent reduction
- alphaFirst Greek letter
- betaGreek alphabet's second letter
gamma · radiation · isotopes · fission · transmutation · radioactive · unstable · emissions · dosimetry · shielding
pacemakers
Implanted cardiac rhythm devices
- spacecraftVehicle for outer space
- thermoelectricHeat-to-electricity converting
- luminescentEmitting soft light
- Periodic Table HistoryMendeleev, atomic number, Meyer, transuranic elements, Glenn Seaborg
- Inorganic Chemistrytransition metals, periodic table, ligand field theory, alkali metals, noble gases
- radioactivityradioactive decay, radioactive isotopes, radioisotopes, radionuclides, half-life
- element groupsalkali metals, halogens, noble gases, transition metals, lanthanides
- Nuclear Materialsuranium, plutonium, enriched uranium, plutonium-239, uranium-235
- radioactive materialsuranium, plutonium, radium, thorium, radon
actinideslanthanides
F-block metallic element series
lanthanoids · rare earth elements · alkali metals · noble gases · halogens