All transition elements are d-block elements but all d-block elements are not transition metals. Explain

classifiedelements
cbse

#1

Those elements which either themselves or their ions have incompletely filled d-orbitals are called transition elements. They are all d-block elements because ‘d’ orbitals are progressively filled.
But those d-block elements or their ions which do not have incompletely filled d-orbitals are not transition elements, e.g., Zn, Cd and Hg are d-block elements but not transition metals