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The isotopic abundance of `C-12` and `C-14 "is" 98%` and `2%` respectively. What would be the number of `C-14` isotope in `12 g` carbon sample?
A. `1.032xx10^(22)`
B. `3.01xx10^(23)`
C. `5.88xx10^(23)`
D. `6.02xx10^(23)`

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Best answer
Correct Answer - A
Weight of `C-14` isotope in `12 g` sample `=(2)/(100)xx12`
`:.` No. of `C-14` isotopes `=(2xx12xxN)/(100xx14)=1.032xx10^(22)`

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