Which of the following statements are correct?
A. Transition elements exhibit higher enthalpies of atomizaton as they have stronger interatomic interation.
B. `IE_(2)` of `._(23)V lt ._(24)Cr gt ._(25)Mn and ._(28)Ni lt ._(29)Cu gt ._(30)Zn`
C. Ni(II) compounds are more stable than Pt(II) where as Pt(IV) compounds are more stable than nickel (IV).
D. The elements which given the greatest number of oxidation states does not occur in or near the middle of the series.
