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Ferrous oxide (FeO) crystal has a cubic ...

Ferrous oxide `(FeO)` crystal has a cubic structure and each edge of the unit cell is `5.0 A^(@)` Taking density of the oxide as `4.0gcm^(-3)`. The number of `Fe^(2+)` and `O^(2-)` ions present in each unit cell is:

A

Four `Fe^(2+)` and four `O^(2–)`

B

Two `Fe^(2+)` and four `O^(2–)`

C

Four `Fe^(2+)` and two `O^(2–)`

D

Three `Fe^(2+)` and three `O^(2–)`

Text Solution

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The correct Answer is:
A
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