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Assertion. H_(2)O is the only hydride of chalcogens which is liquid at ordinary temperature. Reason. In ice, each O atom is surrounded by two covalent bonds and two H-bonds.

Answer»

If both assertion and reason are TRUE, and reason is the correct explanation of the assertion.
If both assertion and reason are ture, but reason is not the correct explanantion of the assertion.
If assertion is true, but reason is FALSE.
If both assertion and reason are false

Solution :Correct exlplanation. Because of extensive H-bonding, `H_(2)O` has HIGH b.p. and HENCE is a liquid at room temperature.


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