Ferrous oxide has a cubic structure and each edge of the unit cell is 5.0 Å. Assuming density of the oxide as \[4.0g-c{{m}^{-3}}\], then the number of \[F{{e}^{2+}}\] and \[{{O}^{2-}}\] ions present in each unit cell will be [MP PET 2000]

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

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

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

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

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 Å. Assuming density of the oxide as \[4.0g-c{{m}^{-3}}\], then the number of \[F{{e}^{2+}}\] and \[{{O}^{2-}}\] ions present in each unit cell will be [MP PET 2000]
A.	Four \[F{{e}^{2+}}\] and four \[{{O}^{2-}}\]
B.	Two \[F{{e}^{2+}}\] and four \[{{O}^{2-}}\]
C.	Four \[F{{e}^{2+}}\] and two \[{{O}^{2-}}\]
D.	Three \[F{{e}^{2+}}\] and three \[{{O}^{2-}}\]
Answer» B. Two \[F{{e}^{2+}}\] and four \[{{O}^{2-}}\]

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Ferrous oxide has a cubic structure and each edge of the unit cell is 5.0 Å. Assuming density of the oxide as \[4.0g-c{{m}^{-3}}\], then the number of \[F{{e}^{2+}}\] and \[{{O}^{2-}}\] ions present in each unit cell will be [MP PET 2000]

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