The experimental first ionization energies of phosphorus and sulfur are 1012 kJ mol…
CHEMISTRY · Subjective · AP · Chemistry · Atomic Structure and Properties · Atomic Structure and Properties
Problem
The experimental first ionization energies of phosphorus and sulfur are 1012 kJ mol−1 and 1000 kJ mol−1, respectively, a slight decrease even though sulfur has the higher atomic number. In one or two sentences, explain this anomaly in terms of electron configuration and electron–electron repulsion.