Description : Give two examples of trivalent and pentavalent impurities.
Last Answer : Trivalent Impurities: 1) Gallium (Ga) 2) Indium (In) 3) Aluminium (Al) 4) Boron (B) Pentavalent Impurities: 1) Phosphorus (P) 2) Antimony (Sb) 3) Arsenic (As) 4) Bismuth (Bi)