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

  • question_answer
    The total number of neutrons in dipositive zinc ions with mass number 70 is        [IIT 1979; Bihar MEE 1997]

    A)                 34          

    B)                 40

    C)                 36          

    D)                 38

    Correct Answer: B

    Solution :

                    \[_{30}Z{{n}^{70}},\,Z{{n}^{2+}}\] has No. of Neutrons = 70 ? 30 = 40. 


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