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← ScienceWhich consequence results when a molecular crystal is quenched?
A)Increased material brittleness occurs quickly
B)The crystal retains high-temperature structure✓
C)Molecular orbital overlap remains unchanged
D)Grain boundary diffusion is accelerated greatly
💡 Explanation
The crystal retains high-temperature structure, a kinetically trapped non-equilibrium state, because the molecular reorientation required for equilibrium is suppressed by low temperatures limiting Molecular Relaxation. Therefore, the high temperature form 'freezes in,' rather than adopting the ground state alternative favored at the quench temperature.
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