noun 다운로드 🔗공유 란타넘족 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. Examples : "Chemists studying the properties of the lanthanides group them together because these elements behave similarly in chemical reactions. " 화학자들은 란타넘족의 성질을 연구하면서 이 원소들이 화학 반응에서 유사하게 반응하기 때문에 함께 묶습니다. element chemistry science AI와 채팅어휘 게임독해 연습