A hypothetical element 
exists in nature as two isotopes 
and 
with their relative abundances 
and 
respectively. Then, the average atomic mass (in u) of element 
is
Text Solution
Verified by ExpertsThe correct answer is:
D
Given, 
of 
and, 
of 
.
Now, average atomic mass of 
abundance of 
abundance of 
.
So, average atomic mass of 
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