Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
MHT CET202521 Apr 2025Morning ShiftChemistryChemical Bonding and Molecular StructureActual

Which of the following molecules consist minimum lone pair of electrons in the valence shell of central atom?

Options

  1. ASCl ₂
  2. BPCl ₃
  3. CClF ₃
  4. DXeF ₄

Correct answer

B. PCl ₃

Step-by-step solution

Lone pairs on the central atom are determined by subtracting bonding electrons from total valence electrons and dividing by 2. For SCl ₂ : Sulfur valence electrons = 6, bonding electrons = 2, remaining = 4, lone pairs = 2. For PCl ₃ : Phosphorus valence electrons = 5, bonding electrons = 3, remaining = 2, lone pairs = 1. For ClF ₃ : Chlorine valence electrons = 7, bonding electrons = 3, remaining = 4, lone pairs = 2. For XeF ₄ : Xenon valence electrons = 8, bonding electrons = 4, remaining = 4, lone pairs = 2. The

Practice Chemical Bonding and Molecular Structure on Quantrex Academy →

More from Chemical Bonding and Molecular Structure

Which of the following sets are correctly matched? Molecule Hybrididization Geometry I. BrF ₅ sp ^3 d ^2 square pyramidal II. XeF ₆ sp ^3 d ^3 Distorted octahedral III. SF ₄ dsp ^2 2025The order of dipole moments of H ₂ O ( A ), CHCl ₃( ~B ) and NH ₃( C ) is 2025The correct order of increasing bond lengths of C - H , O - H , C - C and H - H is 2025The sum of the bond orders of O ₂²⁺, O ₂²⁻, O ₂⁺, O ₂⁻, O ₂ and sum of the unpaired electrons present in them respectively are 2025Match the following List-I (Molecule) List-II (Dipole moment in D) A) HCl I) 1.07 B) NH ₃ II) 1.85 C) H ₂ O III) 0.23 D) NF ₃ IV) 1.47 The correct answer is 2025Which of the following sets are correctly matched? Molecule Number of lone pairs of electrons on central atom Hybridization I) PCl ₃ 1 sp ^3 II) SO ₂ 1 sp ^2 III) SF ₄ 1 sp ^3 d IV 2025The number of molecules having lone pair of electrons on central atom in the following is ( BF ₃,~ SF ₄,~ SiCl ₄,~ XeF ₄,~ NCl ₃,~ XeF ₆,~ PCl ₅,~ HgCl ₂,~ SnCl ₂ ) 2025Observe the following molecules/ions. NH ₄⁺, NH ₃, BF ₃, OH ⁻, CH ₃⁺, H ⁺, CO , C ₂ H ₄ The number of Lewis bases in the above list is 2025 Full Chemical Bonding and Molecular Structure list All MHT CET PYQs