Amongst H_2O, H_2S, H_2Se and H_2Te, the one with the highest boiling point is:

JEE Main Chemistry question

Amongst and , the one with the highest boiling point is:

(A), because of hydrogen bondingCorrect
(B), because of higher molecular weight
(C), because of hydrogen bonding
(D), because of lower molecular weight

Answer: (A)

Solution

Although has by far the lowest molecular weight of this series, oxygen's small size and high electronegativity allow extensive intermolecular hydrogen bonding in water — far stronger than the simple dispersion forces present in

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Question ID VK-133767