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JEE Main & Advanced Chemistry Classification of Elements and Periodicity in Properties / तत्त्वों का वर्गीकरण एवं गुणों में आवर्ति Question Bank Self Evaluation Test - Classification of Elements and Periodicity in Properties

  • question_answer
    Sum of first three ionization energies of Al is \[53.0\text{ }eV\text{ }ato{{m}^{-1}}\] and the sum of first two ionization energies of Na is \[52.2\text{ }eV\text{ }ato{{m}^{-1}}.\] Out of Al(III) and Na(II)              

    A) Na (II) is more stable than Al (III)

    B) Al (III) is more stable than Na (II)

    C) Both are equally stable

    D) Both are equally unstable

    Correct Answer: B

    Solution :

    [b] Ionization energy is not the only the criteria for the stability of an oxidation state.


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