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  5. Classification of Elements and Periodicity in Properties / तत्त्वों का वर्गीकरण एवं गुणों में आवर्ति

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
    The set of three elements having successive atomic numbers and having the ionization energies of 2372, 520 and \[890\text{ }kJ\] per mol is

    A) H, He, Li          

    B) He, Li, Be

    C) Li, Be, B          

    D) B, C, N

    Correct Answer: B

    Solution :

    [b] He (Z = 2) is a noble gas and has highest I.E. The I.E. of Be (Z = 4) is more than that of Li(Z=3)


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