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

  • question_answer
    Total number of unpaired electrons in an atom of atomic number 29 is                                   [CPMT 1984, 93]

    A)                 1             

    B)                 3

    C)                 4             

    D)                 2

    Correct Answer: A

    Solution :

               Atomic number of Cu is 29 so number of unpaired electrons is 1       \[Cu=(Ar)\]

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