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

  • question_answer
    Group 16 elements have lower value of first ionisation enthalpy as compared to group 15 elements because

    A) half-filled p-orbitals in group 15 elements are more stable

    B) group 16 elements have smaller size than group 15 elements

    C) group 16 elements contain double bond while group 15 elements have triple bond

    D) group 16 elements have more number of electrons in p-orbitals.

    Correct Answer: A

    Solution :

    Due to extra stability of half-filled p-orbitals of group 15 elements, large amount of energy is required to remove electrons as compared to group 16 elements.


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