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  5. The p-Block Elements-I / p-ब्लॉक के कुछ तत्व-I

12th Class Chemistry The p-Block Elements-I / p-ब्लॉक के कुछ तत्व-I Question Bank MCQs - The p-Block Elements

  • question_answer
    Arrange the following hydrides of group 16 elements in order of increasing stability.

    A) \[{{H}_{2}}S<{{H}_{2}}O<{{H}_{2}}Te>{{H}_{2}}Se\]

    B) \[{{H}_{2}}O<{{H}_{2}}Te<{{H}_{2}}Se<{{H}_{2}}S\]

    C) \[{{H}_{2}}O<{{H}_{2}}S<{{H}_{2}}Se<{{H}_{2}}Te\]

    D) \[{{H}_{2}}Te<{{H}_{2}}Se<{{H}_{2}}S<{{H}_{2}}O\]

    Correct Answer: D

    Solution :

    There is a decrease in bond enthalpy (H - E) as the size of the element increases on moving down the group hence, the stability decreases on moving down the group.


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