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

  • question_answer
    \[Ca\] has atomic no. 20 and atomic weight 40. Which of the following statements is not correct about \[Ca\]atom                                                                 [MP PET 1993]

    A)                 The number of electrons is same as the number of neutrons

    B)                 The number of nucleons is double of the number of electrons

    C)                 The number of protons is half of the number of neutrons

    D)                 The number of nucleons is double of the atomic number

    Correct Answer: C

    Solution :

                    \[_{20}C{{a}^{40}}\] has 20 proton, 20 neutron.


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