Four hypothetical metals crystallize in the same structure and possess identical atomic radii. The table lists the average number of delocalized electrons per atom (ne) and the measured resistivity ρ at 298 K.
Metal neρ (10−8Ωm)
W 1 14
X 2 8
Y 3 7
Z 3 12
Based on the metallic bonding model, which metal’s resistivity most strongly suggests that lattice defects or impurity scattering play a significant role in addition to electron concentration effects?
a) W
b) Y
c) Z
d) X