The crystal with metal deficiency defect is:

The crystal with a metal deficiency defect is

In alpha crystal with metal deficiency defect …………..

Consider following statements I: If three Fe^(2+) are missing from its lattice site in FeO , then there must be two Fe^(3+) ions somewhere in the lattice to balance the electrical charges II : Crystals with metal deficiency defects are called super-conductors III: Crystals with metal deficiency defects are called semiconductors The correct statements are

Formula of metal oxide with metal deficiency defect in its crystal is A_(0.8)O . The crystal contains A^(2+) and A^(3+) ions. The fraction of metal existing as A^(2+) ions in the crystal is -

Formula of metal oxide with metal deficiency defect in its crystal is A_(0.8)O . The crystal contains A^(2+) and A^(3+) ions. The fraction of metal existing as A^(2+) ions in the crystal is -

What are metal deficiency defects ?