FeO crystallizes in C.C.P. lattice where oxide ions form the lattice and Fe2+ ions are present at all octahedral voids. Assume due to heating only one octahedral site in a unit cell becomes vacant but electrical neutrality of the unit cell is maintained and other parameters remain same. Select the correct statement(s). (i)After heating, the crystal contains 2 types of iron ions viz Fe2+ and Fe3+ because some Fe2+ ions are converted into Fe3+ ions (ii)Due to heating if Fe2+ at one edge centre is removed, then Fe2+ at body centre is converted into Fe3+ (iii) If Fe2+ at body centre is removed due to heating, the Fe2+ at of edge centres, are converted into Fe3+ ions (iv)If Fe2+ of body centre is removed due to heating, then all Fe2+ ions along one axis is converted into Fe3+ ions
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FeO crystallizes in C.C.P. lattice where oxide ions form the lattice and Fe2+ ions are present at all octahedral voids. Assume due to heating only one octahedral site in a unit cell becomes vacant but electrical neutrality of the unit cell is maintained and other parameters remain same. Select the correct statement(s). (i)After heating, the crystal contains 2 types of iron ions viz Fe2+ and Fe3+ because some Fe2+ ions are converted into Fe3+ ions (ii)Due to heating if Fe2+ at one edge centre is removed, then Fe2+ at body centre is converted into Fe3+ (iii) If Fe2+ at body centre is removed due to heating, the Fe2+ at of edge centres, are converted into Fe3+ ions (iv)If Fe2+ of body centre is removed due to heating, then all Fe2+ ions along one axis is converted into Fe3+ ions