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Some Basic Concepts of Chemistry
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11/08/2021 10:18 am
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Indium (atomic mass = 114.82) has two naturally occurring isotopes, the predominant one form 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
1 Answer
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11/08/2021 10:21 am
Correct answer: (a) 112.94
Explanation:
Let atomic weight of other isotope is M
114.82 = \(\frac{114.9041 \times 95.72 + M \times 4.28}{100}\)
M = 112.94