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Mass of one atom of the element A is 3.9...

Mass of one atom of the element `A` is `3.9854 xx 10^(-23)g`. How many atoms are contained in 1g of the element `A` ?

A

`2.509xx120^(23)`

B

`6.022xx10^(23)`

C

`12.044xx10^(23)`

D

None of these

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