RAJASTHAN PMT Rajasthan - PMT Solved Paper-2005

  • question_answer
    The electron affinity of \[Be\] is similar to:

    A) \[He\]                                  

    B) \[B\]

    C) \[Li\]                     

    D)        \[Na\]

    Correct Answer: A

    Solution :

    The electron affinity of \[Be\] is similar to that of helium\[(He)\]. Because the electronic configuration of \[Be\] is similar to\[He\].                 \[_{4}Be=1{{s}^{2}},\,\,2{{s}^{2}}\]                 \[_{2}He:1{{s}^{2}}\]


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