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Iron has body centred cubic cell with a ...

Iron has body centred cubic cell with a cell edge of 286.5 pm. The density of iron is 7.87 g `cm^(-3)`. Use this information to calculate Avogadro's number. (Atomic mass of Fe = 56 `mol^(-3)`)

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See Q. 19 , Set -I, Delhi Board , 2009.
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