1.

Which of the following are donor impurities?

  1. Gold
  2. Phosphorus
  3. Boron
  4. Antimony
  5. Arsenic
  6. Induim
Select the correct answer using the following codes

A. 1, 2, 3
B. 1, 2, 4, 6
C. 3, 4, 5, 6
D. 2, 4, 5
Answer» E.


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