Definition for Actinides
From Biology Forums Dictionary
The 14 metals in each of periods 6 and 7 that range in atomic number from 57–70 and 89–102, respectively; the elements filling the f block.
From Biology Forums Dictionary
The 14 metals in each of periods 6 and 7 that range in atomic number from 57–70 and 89–102, respectively; the elements filling the f block.