STANDARDChemistry-Chemical Bonding and Molecular Structure
STANDARD Chemistry Dipole Moment and Bond Angle MCQ Question
Type: MCQ-conceptual-Medium-Class 11
Which of the following order is correct?
A
AlCl₃ < MgCl₂ < NaCl : Polarising power
B
CO > CO₂ >> HCO₂⁻ > CO₃²⁻ : Bond length
C
BeCl₂ < NF₃ < NH₃ : Dipole moment
D
H₂S > NH₃ > SiH₄ > BF₃ : Bond angle
Correct Answer
Option C
Detailed Explanation
(a) Polarising power of cations increases with the increasing charge. NaCl < MgCl₂ < AlCl₃. (b) Bond order is inversely proportional to bond length. The decreasing order of bond length is CO₃²⁻ > HCO₂⁻ > CO₂ > CO. (c) Correct order of dipole moment: BeCl₂ < NF₃ < NH₃. (d) Correct order of bond angle: BF₃ > SiH₄ > NH₃ > H₂S.
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