English
Detailed Synonyms for atomic number 57 in English
atomic number 57:
atomic number 57 [the ~] noun
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the atomic number 57
– a white soft metallic element that tarnishes readily; occurs in rare earth minerals and is usually classified as a rare earth 1the La; the atomic number 57; the lanthanum– a white soft metallic element that tarnishes readily; occurs in rare earth minerals and is usually classified as a rare earth 1