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Analysis show that iron oxide consist of Iron ion with 94 % ions having d 6 configuration and 6 % having d 5 configuration. Which amongst the following best represents the formula of the oxide?

Options

  1. AF e 0.97 O
  2. BF e 1.03 O
  3. CF e 0.60 O
  4. DF e 0.94 O 0.94

Correct answer

A. F e 0.97 O

Step-by-step solution

d 6 → F e + 2 , d 5 → F e + 3 Total charge of Iron = 0.94 × 2 + 0.06 × 3 = 1.88 + 0.18 = 2.06 Number of O – 2 i o n = 2.06 2 = 1.03 Formula of solid = F e O 1.03 = F e 0.97 O

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