lutetium
Rare-earth metal
Lutetium is a chemical element, the last and heaviest of the rare earth metals.
Symbol Lu, atomic number 71.
It has few commercial applications due to its scarcity and difficulty of extraction, though it appears in some specialized catalysts and medical imaging.
The name derives from Lutetia, the Latin name for Paris.
Atomic number fifty-seven
- ceriumAtomic number fifty-eight
- neodymiumRare-earth metallic element
- samariumRare-earth metal, element 62
- europiumElement sixty-three
gadolinium · terbium · dysprosium · holmium · erbium · thulium · ytterbium · yttrium
Closely packed together
- malleableCapable of being shaped
- ductileAble to deform permanently
- lustrousSoftly bright, reflective
- corrosion-resistantWithstands oxidation and decay
tarnish · oxidation · high melting point · paramagnetic · silvery · metallic luster · soft · workable
Radiotracer-based internal imaging
- cancer treatmentMedical intervention for malignancy
- targeted therapyTreatment hitting specific molecules
- catalystAgent enabling change
- datingPursuing romantic connections
Of great mass
- silvery-whitePale metallic sheen
- denseClosely packed together
- radioactive decayUnstable atoms releasing energy
- half-lifePeriod for fifty-percent reduction
lanthanum
Atomic number fifty-seven
- ceriumAtomic number fifty-eight
- neodymiumRare-earth metallic element
- samariumRare-earth metal, element 62
europium · gadolinium · terbium · dysprosium · holmium · erbium · thulium · ytterbium · yttrium · scandium
dense
Closely packed together
corrosion-resistant · tarnish · oxidation · high melting point · paramagnetic · silvery · metallic luster · soft · workable
PET scan
Radiotracer-based internal imaging
- cancer treatmentMedical intervention for malignancy
- targeted therapyTreatment hitting specific molecules
- catalystAgent enabling change
heavy
Of great mass
- silvery-whitePale metallic sheen
- denseClosely packed together
- radioactive decayUnstable atoms releasing energy
half-life · atomic mass · metallic · solid · discovery · 1907 · naming
rare
Seldom found or seen