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  3. RAJASTHAN PMT

RAJASTHAN PMT Rajasthan - PMT Solved Paper-1997

  • question_answer
    \[_{19}{{K}^{40}},{{\,}_{18}}A{{r}^{40}},{{\,}_{20}}C{{a}^{40}}\]are:

    A)  isotones       

    B)                         isobars

    C)                         isodiapheres  

    D)                         isotopes

    Correct Answer: B

    Solution :

    Which have same atomic weight and different atomic number is known as isobar.


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