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NEET Sample Paper NEET Sample Test Paper-59

  • question_answer
    The molecule/species having one unpaired electron is:

    A) \[NO\]                          

    B) \[CO\]  

    C) \[C{{N}^{-}}\]                        

    D) \[{{O}_{2}}\]

    Correct Answer: A

    Solution :

    [a] NO As only NO has odd number of electrons. (7 + 8 = 15) \[C{{N}^{-}}\]has 14 electrons i.e. 6 (from C) + 7(from N) +1 (due to negative charge) CO has 14 electrons 6[c] + 8(0) \[{{O}_{2}}\] has16 electrons 2x+8 (0)


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