(a) Silver atom has completely filled 'd' orbitals `(4d^10)` in its ground state. How can you say that it is a transition element ? (b) Actinoids exhibit a large number of oxidation states in comparison to corresponding members of Lanthanoid series. Why?

Copper atom has completely filled d orbitals (3d^(10)) in its ground state. How can we say that it is a transition element

Silver atom has completely filled d orbitals (4d^(10)) in its ground state. How can you say it is a transition element?

How would you account for the fact that actinoids exhibit a larger number of oxidation state than the corresponding lanthanoids?

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

The one which has incompletely filled d-orbitals in its ground state or in any one of its oxidation state is known as

(i) Give the general electronic configuration of d-block elements, (ii) Silver atom has completely filled d-orbitals (4d^10) in its ground state. Yet, it is considered as transition element. Why? (iii) Cu^+ ion is not stable in aqueous solution. Explain. (iv) Actinoids contraction is greater from element to element than lanthanoid contraction. Why?