(i) Write the outer shell electronic configuration of an element with atomic number 24. Why is this different from the elements that are adjacent to it in the periodic table?
(ii) Why is Hg not considered as a transition element?
(iii) The third ionisation enthalpy of a few transition elements are given below:

Explain the reason for the break in the trend of steady increase in third ionisation enthalpy as shown in the table. Based on this, what can be said about the second ionisation energy of Cr as compared to that of Mn?