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  3. 12th Class
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12th Class Chemistry Sample Paper Chemistry Olympiad Sample Paper-1

  • question_answer
    The atomic number of vanadium (V), chromium (Cr), manganese (Mn) and iron (Fe) are respectively 23, 24, 25 and 26. Which one of these may be expected to have the highest second ionisation enthalpy?

    A)  Cr                   

    B)  Fe

    C)  Mn                  

    D)  V

    Correct Answer: A

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