Chemistry · Elementary idea of metallic bonding, hydrogen bonding and its applications
Assertion is the only hydride of group -16 which is liquid at ordinary temperatu
Assertion \( \boldsymbol{H}_{2} \boldsymbol{O} \) is the only hydride of group -16 which is liquid at ordinary temperature. Reason In ice, each oxygen atom is surrounded by two convalent bonds and two hydrogen bonding.
- A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
- B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
- C. Assertion is correct but Reason is incorrect
- D. Both Assertion and Reason are incorrect
Step-by-step solution
Assertion is correct: water is liquid at room temperature while other group-16 hydrides (H2S, H2Se, H2Te) are gases. Reason is correct: in ice, each oxygen forms two covalent bonds and two hydrogen bonds. However, the reason does not explain why water is liquid; it describes the structure of ice, not the reason for water's high boiling point. The correct explanation involves strong hydrogen bonding in water. Thus, both statements are true but the reason does not justify the assertion.
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