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← ScienceWhich risk increases when cooling amorphous silica below 0K?
A)Zero-point energy bond breakage✓
B)Thermal phonon frequency increase
C)Increased covalent rotational symmetry
D)Enhanced Van der Waals attraction
💡 Explanation
Cooling amorphous silica to 0K risks zero-point energy bond breakage because even at 0K, residual vibrational energy can exceed bond energy, causing bond rupture via quantum tunneling, therefore the silica structure degrades at cryogenic temperature, rather than remaining stable due to continued atomic thermal motion.
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