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

  • question_answer
    The number of electrons in \[{{[_{19}^{40}K]}^{-1}}\] is [CPMT 1997; AFMC 1999]

    A)                 19          

    B)                 20

    C)                 18          

    D)                 40

    Correct Answer: D

    Solution :

    Not Available


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