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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
    Covalency of oxygen cannot exceed 2 unlike sulphur which can show +4 or +6 because

    A) oxygen atom does not have d-orbitals

    B) oxygen atom has two unpaired electrons in its valence shell

    C) oxygen can form a double bond with another oxygen atom

    D) electrons of oxygen atom cannot be promoted to d-orbitals due to its small size.

    Correct Answer: A

    Solution :

    Oxygen atom does not have d-orbitals in the valence shell. Sulphur can show +4 and +6 oxidation states due to presence of vacant 3d-orbitals to which electrons can be promoted.


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