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JEE Main & Advanced Chemistry Classification of Elements and Periodicity in Properties / तत्त्वों का वर्गीकरण एवं गुणों में आवर्ति Question Bank Ionisation Energy

  • question_answer
    The first ionization potentials \[\left( eV \right)\] of \[Be\] and \[B\] respectively are [CBSE PMT 1998]

    A) \[8.29eV\], \[9.32eV\]

    B) \[9.32eV\], \[9.32eV\]

    C) \[8.29eV\], \[8.29eV\]

    D) \[9.32eV\], \[8.29eV\]

    Correct Answer: D

    Solution :

    First I.P. of \[Be>B\] because of stable \[n{{s}^{2}}\] configuration.


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