Which of the 3d series elements is not considered as transition element?

What are inner transition elements.

Silver atom has complete filled d-orbitals (4d^(10)) in its ground state. Yet, it is considered as transition element. Why?

Both Cu and Zn have completely filled 3d atomic orbital. Cu is considered as transition element but Zn is not. Explain.

Why Zn, Cd and Hg are not regarded as transition element?

In what way is the electronic configuration of the transition elements different from that of non-transition elements?

Though copper, silver and gold have completely filled set of d-orbitals yet they are considered as transition metals. Why?

Which of the 3d series of the transition metals exhibits the largest number of oxidation states and why?