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Q.

The cubic unit cell of a perovskite structure containing atoms of types A. B and C is illustrated below. What is the empirical formula of this substance?

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a

ABC

b

ABC3

c

AB4C6

d

AB8C12

answer is B.

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Detailed Solution

B cornel = 8 atom

total atom = 18×81

O  C at edge

total atom = 12×14=3

  A body centre

total atom = 1

formula = ABC3.

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