Which of the following is not a donor atom? And explain why?
A. Antimony
B. Arsenic
C. Aluminum
D. Phosphorus
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Arsenic, antimony, bismuth, and phosphorous are pentavalent impurities. Because these materials give or donate one electron to the doped material, they are also called DONOR impurities. When a pentavalent (donor) impurity, like arsenic, is added to germanium, it will form covalent bonds with the germanium atoms.
king186:
u can also add l.p
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