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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 Sample Paper Topic Test - Periodic Table

  • question_answer
    When an isolated gaseous cation \[{{X}^{+}}(g)\] is converted into \[{{X}^{-}}(g)\] anion, the amount of energy released is 16.8 eV. Calculate the electro negativity value of the atom X on Pauling's scale.

    A) 1

    B) 2

    C) 4

    D) 3

    Correct Answer: D

    Solution :

    [d] \[{{X}^{+}}(g)\xrightarrow[{}]{{}}{{X}^{-}}(g);\] Energy
    \[=IE+IA=16.8\,\text{eV}\]
    \[E{{N}_{pauling}}=\frac{IA+EA}{5.6}=\frac{16.8}{5.6}=3\]


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