crystallizes in the cubic system, in which there is four formula units in each unit cell. The density of the crystal is 4.0 g/cm^3. The side length of each unit cell is (Fe = 56, Na = 6 × 10^23)

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Question

$FeO$ crystallizes in the cubic system, in which there is four formula units in each unit cell. The density of the crystal is 4.0 g/cm^3. The side length of each unit cell is (Fe = 56, Na = 6 × 10^23)

Prashant Kotian · Accepted Answer

Correct answer: C. M() = 72 g/mol. Z=4. a^3 = 4*72/(6e23*4.0) = 1.2e-22 cm^3. a = 4.932 A.

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