Explain why atoms with half filled and completely filled orbitals have extra stability.

Atoms possessing stable configuration have less tendency to loss and consequently will have high value of ionization enthalpy. a) Justify this statement by taking the case of halffilled and completely filled configurations. b) The noble gases have highest ionization enthalpies in each respective periods. Why?

A transition element is defined as one which has incompletely filled d - orbitals in its ground state or in any one of its oxidation states Why are Zn Cd and Hg not regarded as transition metals?

The correct order of relative stability of half filled and completely filled shell is

Complete the table by fill in the blanks.

Assertion : The free gaseous Cr atom has six unpaired electrons. Reason : Half-filled s-orbital has greater stability. : If both (A) and (R) are correct and (R) is the correct explanation of(A)., If both (A) and (R) are correçt, but (R) is not the correct explanation of (A)., If (A) is correct, but (R) is incorrect., If both (A) and (R) are incorrect.

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