Assertion:Fe_0.95O shows metal deficiency defect.
Reason: This non-stoichiometric defect occurs due to missing O^2- ions from the lattice.

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Assertion is false, Reason is true.

Assertion and Reason are true. Reason is correct explanation of Assertion.

Assertion and Reason are true. Reason is not the correct explanation of Assertion.

Assertion is true, Reason is false.

answer is C.

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Detailed Solution

The crystal lattice contains certain Fe 2+ ions that are absent in order to preserve electrical neutrality. Therefore, there are fewer iron ions present than there are oxide ions.

The lack of stoichiometry is due to the simplicity of oxidizing Fe 2+ to Fe 3+, which results in only a little part of Fe²⁺ being replaced by two thirds as much Fe³⁺.

As a result, the crystals contain two Fe 3+ ions to balance the charge for each "missing" Fe 2+ ion.

As in the formula: 3Fe²⁺= 2Fe3⁺to preserve electrical neutrality.

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