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

  • question_answer
    The outer electronic structure \[3{{s}^{2}}3{{p}^{5}}\] is possessed by   [Pb. PMT 2002; Pb. CET 2001]

    A)                 Cl           

    B)                 O

    C)                 Ar          

    D)                 Br

    Correct Answer: A

    Solution :

                    The atomic number of chlorine is 17 its configuration is \[1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{2}}3{{p}^{5}}\]

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