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Ferrous oxide has a cubic structure and ...

Ferrous oxide has a cubic structure and eged length of the unit cell is 5.0 A. Assuming the density of ferrous oxide to be `3.84g//cm^(3)` the no. of `Fe^(2+) and O^(-2)`ions present in each unit cell are `("use "N_(A) = 6 xx 10^(23))`

A

`4 Fe^(2+) and 4 O^(2-)`

B

`2 Fe^(2+) and 2 O^(2-)`

C

`1 Fe^(2+) and 1 O^(2-)`

D

`3 Fe^(2+) and 4 O^(2-)`

Text Solution

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The correct Answer is:
A
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