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Which outcome occurs when excessive impurities disrupt crystal periodicity?

A)Reduced carrier mobility occurs greatly
B)Increased piezoelectric effect amplifies signal
C)Enhanced thermal conductivity dissipates heat.
D)Greater optical transparency becomes evident

💡 Explanation

Reduced carrier mobility happens because impurity scattering disrupts band structure and electron flow, therefore conductivity decreases rather than piezoelectricity increasing or thermal/optical changes, because the impurities interfere with electron's path through the normal crystal lattice.

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