JEE Main & Advanced Chemistry Structure of Atom Question Bank Quantum number, Electronic configuration and Shape of orbitals

  • question_answer
    The number of unpaired electrons in \[1{{s}^{2}},\,2{{s}^{2}}2{{p}^{4}}\] is [NCERT 1984; CPMT 1991; MP PMT 1996, 2002]

    A)                 4

    B)                 2

    C)                 0             

    D)                 1

    Correct Answer: B

    Solution :

               \[{{O}_{8}}=\]


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