Ferrous oxide has a cubic structure and each edge of the unit cell is \[5.0\text{ }{{A}^{o}}\]. Assuming density of the oxide as \[4.0\text{ }g\text{ }c{{m}^{-3}}\] the number of \[F{{e}^{2+}}\] and \[{{O}^{2-}}\] ions present in each unit cell will be

two \[F{{e}^{2+}}\] and four \[{{O}^{2-}}\]

three \[F{{e}^{2+}}\] and three \[{{O}^{2-}}\]

four \[F{{e}^{2+}}\] and two \[{{O}^{2-}}\]

four \[F{{e}^{2+}}\] and four \[{{O}^{2-}}\]

Ferrous oxide has a cubic structure and each edge of the unit cell is

1.	Ferrous oxide has a cubic structure and each edge of the unit cell is \[5.0\text{ }{{A}^{o}}\]. Assuming density of the oxide as \[4.0\text{ }g\text{ }c{{m}^{-3}}\] the number of \[F{{e}^{2+}}\] and \[{{O}^{2-}}\] ions present in each unit cell will be
A.	two \[F{{e}^{2+}}\] and four \[{{O}^{2-}}\]
B.	three \[F{{e}^{2+}}\] and three \[{{O}^{2-}}\]
C.	four \[F{{e}^{2+}}\] and two \[{{O}^{2-}}\]
D.	four \[F{{e}^{2+}}\] and four \[{{O}^{2-}}\]
Answer» E.

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Ferrous oxide has a cubic structure and each edge of the unit cell is \[5.0\text{ }{{A}^{o}}\]. Assuming density of the oxide as \[4.0\text{ }g\text{ }c{{m}^{-3}}\] the number of \[F{{e}^{2+}}\] and \[{{O}^{2-}}\] ions present in each unit cell will be

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