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

  • question_answer
    Number of unpaired electrons in the ground state of beryllium atom is

    A)                 2             

    B)                 1

    C)                 0             

    D)                 All the above

    Correct Answer: C

    Solution :

               \[B{{e}_{4}}=1{{s}^{2}},\,2{{s}^{2}}\]=  (Ground state)                 Number of unpaired electrons in the ground state of Beryllium atom is zero.


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