(a) What type of semiconductor is obtained when silicon is doped with boron?

(b) What type of magnetism is shown in the following alignment of magnetic moments?

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(c) What type of point defect is produced when AgCl is doped with CdCl₂?

Solution

(a) When silicon is doped with boron, a p-type semiconductor is obtained.

(b) The magnetism shown in the alignment of magnetic moments is ferromagnetism.

Ferromagnetism is the basic mechanism by which certain materials (such as iron) form permanent magnets, or are attracted to magnets.

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