[" Actinoid contraction is greater from element to element than "],[" lanthanoid contraction.Why? "]

(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?

Actinoid contraction is greater from element to element than anthanoid contraction Why?

Give reason : a) Cerium (Ce) exhibits +4 oxidation state. b) Actinoid contraction is greater from element to element than lanthanoid contraction.

Give reason. (a) Cerium (Ce) exhibits +4 oxidation state.(b) Actinoid contraction is greater from element to element than lanthanoid contraction.