1.

Non-stoichiometric compound Fe_(x)O (where 0.84ltxlt0.96) is formed due to metal deficiency defects in the crystal structure of FeO. The electrical neutrality of the crystal of Fe_(x)O is maintained because when one Fe^(2+) ion leaves the crystal-

Answer»

one oxide ion in the form of `O_(2)(g)` LEAVES the crystal
one `Fe^(2+)` ion and one `Fe^(3+)` ion GET reduced
two `Fe^(2+)` IONS and two `Fe^(3+)` ions get reduced
two `Fe^(2+)` ions OXIDISE to two `Fe^(3+)` ions

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