First-ionization energies (in kJ·mol⁻¹) for the period-3 elements are provided: Na…
CHEMISTRY · Subjective · AP · Chemistry · Atomic Structure and Properties · Atomic Structure and Properties
Problem
First-ionization energies (in kJ·mol⁻¹) for the period-3 elements are provided:
Na 496 Mg 738 Al 578 Si 786 P 1012 S 999 Cl 1251 Ar 1521
Explain, in two separate sentences, the reasons for (a) the lower value for Al compared with Mg and (b) the lower value for S compared with P, referencing electron configuration and subshell considerations in each case.