CHEMISTRY · Subjective · AP · Chemistry · Atomic Structure and Properties · Atomic Structure and Properties
Problem
Two unknown elements, A and B, each show three peaks in their photoelectron spectra.
• Element A: peaks at 0.6 eV (relative height = 2), 7 eV (height = 2), and 40 eV (height = 6).
• Element B: peaks at 2 eV (height = 2), 21 eV (height = 2), and 100 eV (height = 6).
Identify which element is more likely to be a metal and justify your choice in one sentence based on the binding energies of their valence electrons.