What are inner-transition elements? Decide which of the following atomic number are the numbers of the inner transition elements: `29,59,74,95,102,104`

Explanation

Inner transition metals are those elements in which the last electron enters the f-orbital. The elements in which the 4f and the 5f orbitals are progressively filled are called f-block elements. Among the given atomic numbers, the atomic numbers of the inner transition elements are 59, 95, and 102.