This first "f" shell is inside the full "5s" and "5p" shells (as well as the "6s" shell in the neutral atom); the "4f" shell is well-localized near the atomic nucleus and has little effect on chemical bonding.
This first "f" shell is inside the full "5s" and "5p" shells (as well as the "6s" shell in the neutral atom); the "4f" shell is well-localized near the atomic nucleus and has little effect on chemical bonding.