How many valence electrons does a semiconductor has? a. 2 b. з C. 6 d. 4 When pure semiconductor is heated, its conductance a. Goes up b. Goes down c. Remains the same d. Can't say When a trivalent impurity is added to a pure semiconductor, it becomes a. A conductor b. An intrinsic semiconductor C. P-type semiconductor d. N-type semiconductor

Q1) a)Explain how doping a pure silicon crystal with donor impurity atoms makes more charge carriers available for conduction.b)Does the above doping result in a p-type or n-type semiconductor? Explain your answer.                                      c) When the diode is forward biased:i) What happens to the barrier potential?ii) What happens to the depletion region?iii) Indicate on your diagram the directions in which the holes and electrons move

C and D please

For p-type semiconductor number of electrons is (equal to / more than / less than) number of holes.