(a) What change occurs when AgCl is doped with `CdCl_(2)` ?
(b) What type of semiconductor is produced when silicon is doped with boron?

Explanation

(a) `CdCl_(2)` on adding to AgCl introduces impurity defect. The addition of one `Cd^(2+)` ion will replace two `Ag^(+)` ions to maintain electrical conductivity. One of the position of `Ag^(+)` will be occupied by `Ca^(2+)` ion and other will be left as a hole. Thus, a hole is created similar schottky defect.
(b) P-type semiconductor is produced when silicon is doped with boron, because silicon is belongs to group 14.