noun🔗ShareاللانثانيداتAny 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."Chemists studying the properties of the lanthanides group them together because these elements behave similarly in chemical reactions. "يجمع الكيميائيون الذين يدرسون خصائص اللانثانيدات هذه العناصر معًا لأن هذه العناصر تتصرف بشكل مشابه في التفاعلات الكيميائية.elementchemistryscienceChat with AIVocabulary GamePractice Reading
