The 4f subshell is being filled for the rare earth series of elements.
In chemistry, electrons fill up subshells. The subshell that is represented by the actinides family is the f shell. Actinides are elements 89 to 103 on the Periodic Table.
5F
5f
it is transition metal. ---- Actinides family
Fermium is a member of the actinides group.
The actinides
For a 2s subshell to be present, the 1s subshell must first be full, which means no more electrons can be moved into the 1s subshell.
curium belongs to the actinide series on the periodic table. The actinides are a group of elements in the seventh period of the periodic table, and they follow actinium (Ac) and precede lawrencium (Lr). The actinide series includes elements with atomic numbers from 89 to 103. Curium has the atomic number 96 and is represented by the symbol Cm.
Americium is and actinide.
Actinides family
Einsteinium is a member of the actinoids family (period 7).
Actinides family
Actinides family
The family of actinides
actinides group
Uranium is a member of the actinides family.
Uranium is a member of the actinides family.
They are in the period 7 and in the actinides family.
Actinides group
Actinides group