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← ScienceWhich phenomenon causes increased melting point in linear alkane molecules as chain length increases?
A)Increased London dispersion forces✓
B)Decreased dipole-dipole interactions
C)Enhanced hydrogen bond formation
D)Reduced steric hindrance effects
💡 Explanation
As alkane chain length increases, London dispersion forces increase because the surface area for intermolecular interactions grows, requiring more energy to overcome these forces for melting. Therefore, melting point increases, rather than changes due to dipoles, hydrogen bonds (not present), or steric hindrance.
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