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Grade 11Inorganic Chemistry

Element X occurs in nature in the form of two isotopes with atomic mass 35 and 37 in the ratio of 3:1 respectively. Calculate the atomic mass of element X.

Question image for Element X occurs in nature in the form of two iso
Profile image of Abhay singh
8 Years agoGrade 11
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1 Answer

Profile image of krishna bhagat
8 Years ago
See simply to solve
Mass of first isotope 35 and its ratio is 3x
Mass of second isotope is 37 and ratio is 1x 
(Here x  is the common multiple of both as it is ratio)
Now,
        ( 35×3x + 37×1x)/(3x + 1x)
solving it mass comes 35.5

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