Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
COMEDK2015Chemistryp Block Elements (Group 13 & 14)

Silicon doped with arsenic is

Options

  1. Ap -type semiconductor
  2. Bn -type semiconductor
  3. Cintrinsic semiconductor
  4. Dinsulator

Correct answer

B. n -type semiconductor

Step-by-step solution

When, Si (having 4 valence electrons) is doped with As (having 5 valence electrons), 4 electrons form covalent bonds, while the fifth electron remains free and increase conductivity. Hence, Si doped with As is n -type semiconductor.

Practice p Block Elements (Group 13 & 14) on Quantrex Academy →

More from p Block Elements (Group 13 & 14)

Identify the catalyst used to transform carbon monoxide from water gas into carbon dioxide 2026Which from following oxides is amphoteric in nature? 2026What is the formula of Tin (IV) oxide? 2026Which from the following is NOT polymorphic form of silica ? 2026What is the nature of Al ₂ O ₃ ? 2026Select the correct statements from the following. A) Aluminium liberates H ₂ gas with dil. HCl but not with aqueous NaOH . B) Formula of sodium metaborate is Na ₃ BO ₃ C) Boric aci 2025The number of amphoteric oxides from the following is CO ₂, GeO ₂, SnO ₂, PbO ₂, CO , GeO , SnO , PbO 2025Which of the following reactions give H ₂ as one of the products? (Reactions are not balanced) I) NaBH ₄+ I ₂ II) B ₂ H ₆+ N ( CH ₃ )₃ III) A l+ NaOH + H ₂ O IV) BF ₃+ NaH 2025 Full p Block Elements (Group 13 & 14) list All COMEDK PYQs