lanthanoids
Fifteen metallic elements
The lanthanoids are a series of fifteen metallic elements with atomic numbers 57 through 71, from lanthanum to lutetium.
They appear in the first of two rows typically shown below the main periodic table.
The lanthanoids share similar chemical properties—all form trivalent ions and occur together in nature, making them difficult to separate.
Also called lanthanides; together with the actinoids, they constitute the rare earth elements.
Atomic number fifty-eight
- neodymiumRare-earth metallic element
- samariumRare-earth metal, element 62
- europiumElement sixty-three
- gadoliniumLanthanide, atomic number sixty-four
terbium · dysprosium · holmium · erbium · thulium · ytterbium · lutetium · actinides
Objects with attractive force
- catalystsReaction accelerators
- phosphorsSubstances emitting stored light
- lasersAmplified coherent light sources
- batteriesPortable energy storage units
LEDs · capacitors · superconductors · metallurgy · ceramics · pigments
Strong atomic magnetic alignment
- paramagnetismWeak magnetic susceptibility phenomenon
- gadoliniumLanthanide, atomic number sixty-four
- magnetizationAcquiring magnetic polarity
- anisotropyDirection-dependent property variation
spin · speakers · domains · hysteresis · flux
Having valence of three
- spectroscopyStudy of light-matter interaction
- luminescenceHeatless light emission
- crystallographyStudy of atomic lattices
- orbitalRevolving around another
shielding · contraction · electronegativity · isotopes · complexes · aqueous · precipitates
Pale metallic sheen
- malleableCapable of being shaped
- softYielding to touch
- reactiveTending to respond
- tarnishingOxidizing and losing shine
paramagnetic · luminescent · electropositive · ductile · oxidation · flammable · dense
Extracting earth's resources
- separationState of being apart
- ChinaEast Asian superpower
- refiningRemoving unwanted elements
- leachingDissolving out by liquid
cerium
Atomic number fifty-eight
gadolinium · terbium · dysprosium · holmium · erbium · thulium · ytterbium · lutetium · actinides · scandium
magnets
Objects with attractive force
- catalystsReaction accelerators
- phosphorsSubstances emitting stored light
- lasersAmplified coherent light sources
batteries · LEDs · capacitors · superconductors · metallurgy · ceramics · pigments
ferromagnetism
Strong atomic magnetic alignment
- paramagnetismWeak magnetic susceptibility phenomenon
- gadoliniumLanthanide, atomic number sixty-four
- magnetizationAcquiring magnetic polarity
anisotropy · spin · speakers · domains · hysteresis · flux
trivalent
Having valence of three
- spectroscopyStudy of light-matter interaction
- luminescenceHeatless light emission
- crystallographyStudy of atomic lattices
orbital · shielding · contraction · electronegativity · isotopes · complexes · aqueous · precipitates
silvery
Pale metallic sheen
tarnishing · paramagnetic · luminescent · electropositive · ductile · oxidation · flammable · dense
mining
Extracting earth's resources
- separationState of being apart
- ChinaEast Asian superpower
- refiningRemoving unwanted elements