Read the Assertion and Reason below and choose the correct option. — Solid State Chemistry Question

💡 Solution & Explanation

Doping silicon (Group 14) with Group 15 elements provides extra delocalized electrons, increasing conductivity by forming an n-type semiconductor (Assertion is true). The Reason correctly defines what doping is in this context. However, merely defining the process of doping does not explain the *mechanism* of increased conductivity (the addition of mobile charge carriers). Therefore, correct answer is B.