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← ScienceWhich consequence results when van der Waals forces weaken in molecular packing?
A)Increased material compressive strength
B)Decreased polymer glass transition✓
C)Enhanced semiconductor electron mobility
D)Increased metallic crystal malleability
💡 Explanation
Polymer chains become more flexible when van der Waals forces weaken, shifting the polymer's glass transition to lower temperatures. This is because lower intermolecular attraction reduces the energy needed for chain movement; therefore the material softens, rather than becomes more rigid or affects electronic properties.
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