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JEE Main & Advanced Chemistry Some Basic Concepts of Chemistry / रसायन की कुछ मूलभूत अवधारणाएँ Question Bank Self Evaluation Test - Some Basic Concepts of Chemistry

  • question_answer
    Indium (atomic mass = 114.82) has two natural occurring isotopes, the predominant one four has isotopic mass 114.9041 and abundance of 95.72%. Which of the following isotopic mass is the most likely for the other isotope?

    A) 112.94  

    B) 115.90

    C) 113.90            

    D) 114.90

    Correct Answer: A

    Solution :

    [a] Let atomic weight of other isotope is M \[114.82=\frac{114.9041\times 95.72+M\times 4.28}{100}\] \[M=112.94\]    


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