Some Basic Concepts Of Chemistry Question 34

Question: 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?

Options:

A) 112.94

B) 115.90

C) 113.90

D) 114.90

Show Answer

Answer:

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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