The atomic numbers of elements of second transition series lie in the range of

The atomic number of elements of first transition series lie in the range of

The atomic number of elements of second inner transition elements lie in the range of

The number of elements in each of the inner transition series is

In d-block elements the radii of elements of third transition series are similar to those of the elements of second transition series. Give reason.

Write the names and deduce the atomic numbers of the following. the second transition element

The first and last element of the second transition series respectively are

The atomic radii of the second and third transition series are almost the same. Why?

The atomic number of 5f series range from