Position of donor and acceptor energy levels in the band gap

This type of question, asked 4 times: 15 May 2023 S1, 22 Apr 2025 S2, 20 Apr 2026 S1, 19 May 2026 S2. All 4 questions below, oldest first.

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Question 1
15 May 2023 S1
32 $In an extrinsic n-type semiconductor, the free electrons donated by the impurity atoms occupy energy levels in$
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Question 2
22 Apr 2025 S2
46 $In n-type semiconductor, free electrons donated by the impurity atoms occupy energy levels in$
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Question 3
20 Apr 2026 S1
150 $In the band structure of n-type semiconductor , the free electrons donated by impurity atoms occupy energy levels in$
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Question 4
19 May 2026 S2
148 $In the energy band diagram of a p-type semiconductor, the "Acceptor Energy Level" is located$
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Question 1