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Haryana PMT Haryana PMT Solved Paper-2007

  • question_answer
    In the table
    Proton Electron Charge
    23 X +3
    46 43 Y
    X and y are

    A)  \[20,-3\]

    B)  \[20,+3\]

    C)  \[26,-3\]

    D)  none of these

    Correct Answer: B

    Solution :

                    Atomic number = number of protons No. of electrons in positive ion = no. of proton - no. of \[+ve\] charge on ion No. of electrons in negative ion = no. of- proton + no. of \[-ve\] charge on ion (No. of electrons) \[X=23-3=20\] (No. of charge) \[Y=46-43=+3\]


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