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JEE Main & Advanced Chemistry Structure of Atom / परमाणु संरचना Question Bank Atomic number, Mass number Atomic species

  • question_answer
    The atomic number of an element is 35. What is the total number of electrons present in all the p-orbitals of the ground state atom of that element                    [EAMCET (Engg.) 2003]

    A)                 6             

    B)                 11

    C)                 17          

    D)                 23

    Correct Answer: C

    Solution :

               \[{{X}_{35}}=1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}\,3{{s}^{2}}3{{p}^{6}}4{{s}^{2}}3{{d}^{10}}4{{s}^{2}}4{{p}^{5}}\] Total no. of \[{{e}^{-}}\] is all p?orbitals \[=6+6+5=17\].


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