question_answer 38)

What are inner transition elements? Decide which or the following atomic numbers belong to inner transition elements : 29, 59, 74, 95, 102, 104

Answer:

The f-block elements in which last electron enters in the f-subshell of the antepenultimate shell are called inner transition elements. Out of the given choices, the elements included in the inner transition elements have atomic numbers:59, 95 and 102.