A. Alkali metals
B. Lanthanides and Actinides
C. Noble gases
D. Halogens
Answer: Lanthanides and Actinides
A. Alkali metals
B. Lanthanides and Actinides
C. Noble gases
D. Halogens
Answer: Lanthanides and Actinides
Additional Information: Lanthanides and Actinides are series of elements that have filled f orbitals.
Subjects: Atomic Structure, Chemistry