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

  • question_answer Which of the following represents the electronic configuration of an element with atomic number 17 [AMU 1982]

    A)                 \[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{1}}3{{p}^{6}}\]   

    B)                 \[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{4}},4{{s}^{1}}\]

    C)                 \[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}3{{p}^{5}}\]   

    D)                 \[1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{1}}3{{p}^{4}},4{{s}^{2}}\]

    Correct Answer: C

    Solution :

                    Atomic no. 17 is of chlorine.

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