Non-stoichiometric Cu_(2)O in which coper to oxygen ratio is slightly

1.	Non-stoichiometric Cu_(2)O in which coper to oxygen ratio is slightly less than 2:1 is
Answer» an insulator a SUPERCONDUCTOR at 273 K is a p-type semiconductor is an n-type semiconductor Solution :In a sample of non-stoichiometric `Cu_(2)O` in which CU:O ratio less than 2:1, some of the `Cu^(+)` IONS in the lattice are replaced by `Cu^(2+)` ions. A `Cu^(2+)`ION in place of `Cu^(+)` ion is equivalent to a hole as it has one electron less than`Cu^(+)`. This non-stoichiometric sample of `Cu_(2)O` will THUS act as p-type semiconductor.

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