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← ScienceWhich outcome increases when molecular packing efficiency increases?
A)Material transition temperature increases✓
B)Electrical conductivity decreases slightly
C)Permeability to solvents increases
D)Flexibility of a polymer increases
💡 Explanation
Closer molecular packing results in stronger intermolecular forces, because Van der Waals forces increase with proximity due to London Dispersion Forces, therefore melting/transition temperature increases, rather than higher flexibility because less room for motion.
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