Question

Lanthanides and actinides resemble in:

• A. electronic configuration
• B. oxidation state
• C. ionization energy
• D. formation of complexes

Answer 1

Answer: (A)

Electronic configuration lanthanide $4f^{1-14}5d^1,6s^2$ and electronic configuration of actinoid $5f^{1-14}6d^1,7s^2$