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Question

Given that the abundances of isotopes, 14N and 15N are 99.63% and 0.37% respectively, the average atomic mass of N is:
 


A
14.0037 u
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B
14.37 u
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C
14.05 u
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D
14.0025 u
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Solution

The correct option is A 14.0037 u
The average atomic mass of N will be
=(14×0.9963+15×0.0037) u
= 14.0037 u

Chemistry

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