VariousWords beta
Related Terms:
crichtonite
chemistry
lanthanum
vyuntspakhkite
rare earth
transition element
lanthanoid
synchysite
rhabdophane
lanthanides
actinide
periodic table
pseudohomolog
outermost
cerium
ide
lutetium
element
orbital
nonlanthanide
pseudogroup
rare earth element
Definitions:
Noun
rare earth
rare-earth element
lanthanoid
lanthanide
lanthanon
Definition: any element of the lanthanide series (atomic numbers 57 through 71)
Definition: Any of the 14 rare earth elements from cerium (or from lanthanum) to lutetium in the periodic table; because their outermost orbitals are empty, they have very similar chemistry; below them are the actinides.