actinide
Pronunciation:
/ˈæktɪnaɪd/noun
Definitions
Any of the 14 radioactive elements of the periodic table that are positioned under the lanthanides, to which they have similar chemistry.
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/ˈæktɪnaɪd/Definitions
Any of the 14 radioactive elements of the periodic table that are positioned under the lanthanides, to which they have similar chemistry.