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CMC Medical CMC-Medical VELLORE Solved Paper-2013

  • question_answer
    Atomic number of nucleus is Z, while its mass number is M, what will be number of neutrons in nucleus?

    A)  M + Z                   

    B)  M - Z  

    C)  M                          

    D)  Z

    Correct Answer: B

    Solution :

                    Atomic number of nucleus = 2 The mass number = M As the atomic number Z = Number of electrons (e) = number of protons (\[\rho \]) The mass number M = Number of neutrons + Number of protons. Hence, the number of neutrons = M - Z


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