Question

Which of the following statements is incorrect?
When silicon is doped with B or Ga n-type
semiconductor is formed
Germanium is doped with Al to give p-type
semiconductor
Semiconductors also consist of GaAs which has
average valence of four electrons as in Ge or SL
TIQ Croz and ReOz behave like metals in terms of
conductivity​

Answer 1

Explanation:

Since p-type semiconductor has holes as majority charge carriers, thus for obtaining a p-type semiconductor we have to dope a pure silicon with acceptor elements of group III A like aluminium, boron, gallium etc.

And n-type semiconductor has electrons as majority charge carriers, thus for obtaining a n-type semiconductor silicon should be doped with electron rich donor elements of V A group like phosphorous, arsenic etc.