Question

Oxygen and sulphur are in same group in the periodic table. They form compounds with hydrogen,H2O and H2S. However, H2O is liquid,whereas H2S is a gas at room temperatur. Give explanation?

Answer 1

Answer:

H_(2)O is liquid while H_(2)S is a gas, though oxygen and sulphur, both belong to the same group of the periodic table. Oxygen atom is smaller and more electronegative than sulphur. Hence in H2O molecule, O atom forms strong intermolecular H-bonds. ... therefore H2O is a liquid while H2S is a gas at room temperature.

Explanation:

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