Oxygen and sulphur are both members of the same group, but H_2O is a liquid while H_2S is a gas because

JEE Main Chemistry question

Oxygen and sulphur are both members of the same group, but is a liquid while is a gas because

(A)Molecular weight of water is more
(B)Electronegativity of sulphur is more
(C) is a weak acid
(D)Water molecules have strong hydrogen bonds between themCorrect

Answer: (D)

Solution

Oxygen's much higher electronegativity (and smaller size) compared to sulphur allows water molecules to form strong, extensive intermolecular hydrogen bonds, requiring considerably more energy to separate them

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Question ID VK-156114