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

  • question_answer The electronic configuration of an element is \[1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{2}}3{{p}^{6}}3{{d}^{5}}4{{s}^{1}}\]. This represents its [IIT Screening 2000]

    A)                 Excited state     

    B)                 Ground state

    C)                 Cationic form    

    D)                 Anionic form

    Correct Answer: B

    Solution :

               This electronic configuration is Cr (chromium element) in the ground state \[=1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{2}}3{{p}^{6}}3{{d}^{5}}4{{s}^{1}}\]


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