The first-ionization energies for four consecutive 3d-block elements are given
CHEMISTRY · Multi-part · AP · Chemistry · Atomic Structure and Properties · Atomic Structure and Properties
Problem
The first-ionization energies for four consecutive 3d-block elements are given.
Element
V
Cr
Mn
Fe
I1 (kJ mol−1)
650
653
717
762
(1) Describe the overall pattern shown by the data and identify any element whose I1 does not fit a smooth increasing trend.
(2) Provide a comprehensive explanation, grounded in electron configurations and subshell electron arrangements, for the anomaly you identified in part (a). Discuss all relevant factors, including effective nuclear charge and electron–electron interactions.
(3) Copper (Cu) and zinc (Zn) follow these elements in the same period. Predict which of the two is more likely to display a similar deviation in I1 and justify your prediction using the concepts invoked in part (b).