Q. The atomic radii of transition elements from Cr to Cu are almost equal because

 1741  172 NTA AbhyasNTA Abhyas 2020The d-and f-Block Elements Report Error

Solution:

From to elements have half or more than half filled (n-1)d-orbitals. Here, an increase in effective nuclear charge is balanced by increased screening effect of electrons in (n - 1)d-orbitals.