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प्रश्न
Which of the following alkane has strong London dispersion forces?
पर्याय
n-Butane
iso-Butane
n-Pentane
neo-Pentane
MCQ
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उत्तर
n-Pentane
Explanation:
The strength of London forces increases with increasing molecular mass.
n-Pentane is longer and somewhat spread out, whereas neo-pentane is more spherical and compact. London dispersion forces are stronger in a long chain of atoms, where molecules are not compact. Hence, n-pentane has strong London dispersion forces.
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