When added to silicon, which of the following dopants would result in an electron-rich semiconductor?

Name: When added to silicon, which of the following dopants would result in an electron-rich semiconductor?
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When added to silicon, phosphorus (P) would result in an electron-rich semiconductor. Phosphorus has one more valence electron than silicon, so when it is introduced as a dopant, it creates an excess of free electrons that can carry electrical current.

When Added to Silicon, Which of the Following Dopants Would