2. Sample Papers
  3. JEE Main & Advanced
  4. Chemistry
  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 Sample Paper Topic Test - Periodic Table

  • question_answer
    The first ionisation enthalpies for two isotopes of the same elements are

    A) same       

    B) different

    C) some what different   

    D) \[|{{E}_{1}}=2|{{E}_{(II\text{ isotope)}}}\] (n isotope)

    Correct Answer: A

    Solution :

    [a] First ionization enthalpies of two isotopes of the same element are expected to be same because ionization enthalpy depends upon the electronic configuration and effective nuclear charge isotopes of a element have same electronic configuration and thus the same nuclear charge.


You need to login to perform this action.
You will be redirected in 3 sec spinner