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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 correct order of decreasing electronegativity values among the elements I-beryllium, II-oxygen, III-nitrogen and IV-magnesium is

    A) \[II>III>I>IV\]  

    B) \[III>IV>II>I\]

    C) \[I>II>III>IV\]              

    D) \[I>II>IV>III\]

    Correct Answer: A

    Solution :

         [a] Electronegativity values of given elements are as follows: \[Be-1.5\left( I \right)\]       \[Mg-1.2\left( IV \right)\] \[O-3.5\left( II \right)\]       \[N-3.0\left( III \right)\] i.e. \[II>III>I>IV\]


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