Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
AP EAMCET202123 Aug 2021Morning ShiftChemistryp Block Elements (Group 13 & 14)Actual

Consider the following reaction BCl ₃+ NH ₃ BCl ₃ NH ₃ The geometries of BCl ₃ and BCl ₃ NH ₃ respectively are

Options

  1. Atrigonal planar and tetrahedral
  2. Btetrahedral and square planar
  3. Ctetrahedral and trigonal bipyramidal
  4. Dsquare planar and trigonal pyramidal

Correct answer

A. trigonal planar and tetrahedral

Step-by-step solution

The molecular geometry of BCl ₃ is trigonal planar. In BCl ₃ NH ₃ , the central atom B has 6 valence electrons that makes it an electron deficient molecule. BCl ₃ acts as a Lewis acid as it needs 2 electrons to complete its octet. NH ₃ can donate its lone pair to boron as it acts as Lewis acid. The resulting structure is tetrahedral.

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 AP EAMCET PYQs