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

  • question_answer
    If the atomic weight of an element is 23 times that of the lightest element and it has 11 protons, then it contains [EAMCET 1986; AFMC 1989]

    A)                 11 protons, 23 neutrons, 11 electrons

    B)                 11 protons, 11 neutrons, 11 electrons

    C)                 11 protons, 12 neutrons, 11 electrons

    D)                 11 protons, 11 neutrons, 23 electrons

    Correct Answer: C

    Solution :

               Mass no. \[\approx \] At. Wt.                    Mass no. = no. of protons + no. of  neutrons                 At. no.     = no. of protons. 


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