2. Solved Papers
  3. BCECE Medical

BCECE Medical BCECE Medical Solved Papers-2009

  • question_answer
    The successive ionisation energies of an element are 800, 2,000, 3,600, 25,000 and 32,000 kJ/mol. The number of valence electrons are

    A)  5                 

    B)  2

    C)  3                

    D)  4

    Correct Answer: C

    Solution :

    Since there is a sudden increase in the ionisation energy after third ionisation (ie, after the removal of third electron) the number of valence electrons is 3.


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