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Cs (element) , caesium-137 (seez-iŭm) n. an artificial radioactive isotope of the metallic element caesium, used rarely in radiotherapy. Symbol: 137Cs. See also tel… Element , element (el-i-mĕnt) n. a substance, such as carbon, nitrogen, or oxygen, that cannot be decomposed into simpler substances. All the atoms of an eleme… Electropositive Element , Skip to main content
electropositive element Vessel Element , Skip to main content
vessel element Biolimiting Elements , Skip to main content
biolimiting elements Transuranium Elements , transuranium elements, in chemistry, radioactive elements with atomic numbers greater than that of uranium (at. no. 92). All the transuranium element…
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yttrium-90