Correct
镧系元素
/ lán jì yuánsù /
Strokes
Definition
lanthanoid (rare earth series), namely: lanthanum La57 镧[lán], cerium Ce58 铈[shì], praseodymium Pr59 镨[pǔ], neodymium Nd60 钕[nǚ], promethium Pm61 钷[pǒ], samarium Sm62 钐[shān], europium Eu63 铕[yǒu], gadolinium Gd64 钆[gá], terbium Tb65 铽[tè], dysprosium Dy66 镝[dī], holmium Ho67 钬[huǒ], erbium Er68 铒[ěr], thulium Tm69 铥[diū], ytterbium Yb70 镱[yì], lutetium Lu71 镥[lǔ]
Example
As a Noun
lanthanide; lanthanon; lanthanide series