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Carbon has the following three isotopes with relative abundances and masses (amu) shown in the table.

IsotopeRelative abundance(%)Atomic mass(amu)
12C98.89212
13C1.10813.00335
14C2×10-1014.00317

On the basis of above data, the average atomic mass of carbon will be

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By Expert Faculty of Sri Chaitanya
a
12.000 u
b
12.011 u
c
12.015 u
d
13.000 u

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detailed solution

Correct option is B

From the given data in question the average atomic mass of carbon will come out to be (0.98892) (12 u) + (0.01108) (13.00335 u) + (2×10-12)(14.00317 u) = l2.011 u


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