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NEET Sample Paper NEET Sample Test Paper-35

  • question_answer
    Which of the following is the least stable ion?

    A)  \[L{{i}^{+}}\]               

    B)  \[B{{e}^{-}}\]

    C)  \[{{B}^{-}}\]               

    D)  \[{{C}^{-}}\]

    Correct Answer: B

    Solution :

    \[B{{e}^{-}}\] is the least stable ion \[Be(1{{s}^{2}},2{{s}^{2}})\] has stable electronic configuration hence addition of electron decreases stability.


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