Non-Stoichiometric Defects

In a sample of the non-stoichiometric crystal Fe_{_0.96}O , the percentage of cationic sites occupied by Fe^³⁺ ions is

A) 8.0
B) 6.0
C) 4.0
D) 2.0

1 Answers

Let no. Fe²⁺ =x
So, no. of Fe³⁺ = 0.96-x
2x +3(0.96-x) = 2
x=0.88
So, % occupied by Fe³⁺ = 8

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