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← ScienceWhich risk increases greatly under ultraviolet radiation due to disruption of orbitals?
A)Polymer chain scission✓
B)Metallic crystal corrosion
C)Ceramic phase transition
D)Covalent bond stability
💡 Explanation
Polymer chain scission accelerates under UV because bond absorption induces **electronic excitation**, breaking chains, therefore weakening the material. UV interaction affects polymer chains rather than metals or ceramics, where different degradation mechanisms prevail.
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