Why does ethane have a higher boiling point than methane?

Difference in size

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Functional group

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Difference in shape

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None of above

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Solution

The correct option is A Difference in size
Ethane have a higher boiling point than methane because molecules of ethane ( $C_{2} H_{6}$ ) have more Van der Waals forces (intermolecular forces) with neighboring molecules than methane ( $C H_{4}$ ) due to the greater number of atoms present in the molecule of ethane compared to methane.

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