Saved Bookmarks
| 1. |
Explain the meaning of inner-transition series. |
|
Answer» A series of f-block elements having electronic configuration (n – 2)f1-14(n – I) d0-1 ns2 placed separately in the periodic table represents inner transition series. The f-orbitals lie much inside the e-orbitals. Since the last electron enters pre-penultimate shell, these elements are inner transition elements. There are two inner transition series as follows : 4f-series 58Ce → 71Lu 5f-series 90Th → 103Lr |
|