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Which of the following are donor impurities? Gold Phosphorus Boron Antimony Arsenic Induim Select the correct answer using the following codes

1, 2, 3
1, 2, 4, 6
3, 4, 5, 6
2, 4, 5

Correct Answer: 2, 4, 5

Explanation:

Donor impurities have five valence electrons.

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