The valence-region PES of element Q (atomic number 17) shows two peaks
CHEMISTRY · Subjective · AP · Chemistry · Atomic Structure and Properties · Atomic Structure and Properties
Problem
The valence-region PES of element Q (atomic number 17) shows two peaks. The lower-binding-energy peak has relative intensity 2, and the higher-binding-energy peak has relative intensity 5. No other peaks appear in the valence window. Using these data and the atomic number, write the complete ground-state electron configuration of element Q.