Four hypothetical metals crystallize in the same structure and possess identical…

CHEMISTRY · Single correct · A Level · Chemistry · Bonding · Bonding

Problem

Four hypothetical metals crystallize in the same structure and possess identical atomic radii. The table lists the average number of delocalized electrons per atom (nen_e) and the measured resistivity ρ\rho at 298 K. Metal nen_e ρ\rho (10−8 Ω m10^{-8}\,\Omega\,\text m) 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

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