CHEMISTRY · Subjective · AP · Chemistry · Atomic Structure and Properties · Atomic Structure and Properties
Problem
The species Al3+, Mg2+, Na+, and Ne are isoelectronic. Using the atomic numbers (13, 12, 11, and 10, respectively) and the following measured radii: Al3+ = 54 pm, Mg2+ = 72 pm, Na+ = 102 pm, Ne = 160 pm, rank the four species from greatest to least in terms of the electrostatic attraction experienced by an outermost electron. Provide a brief justification for your ordering.