Chemical Bonding And Molecular Structure Questions

25 Practice QuestionsStart Practicing Now

[Easy]The formal charge on the nitrogen atom in the nitrate ion (NO₃⁻) is:...
[Medium]Among LiCl, NaCl, KCl, and CsCl, which compound is expected to have the highest degree of covalent character according to Fajan's rules?...
[Hard]The correct order of bond dissociation enthalpy for the oxygen species O₂⁺, O₂, and O₂⁻ is:...
[Easy]The carbonate ion (CO₃²⁻) has three equivalent C–O bonds of length 129 pm, which is intermediate between a C–O single bond (143 pm) and a C=O double b...
[Medium]The bond order of O₂⁻ (superoxide ion) calculated using molecular orbital theory is:...
[Easy]According to VSEPR theory, the shape of XeF₄ is square planar. The number of lone pairs present on the central atom in XeF₄ is:...
[Easy]Water (H₂O) has an unusually high boiling point of 100 °C compared to H₂S (−60 °C), despite both having bent geometry. The primary reason is:...
[Hard]Among BF₃, NF₃, and ClF₃, the correct order of increasing dipole moment is:...
[Medium]In the molecule BrF₃, the central bromine atom undergoes sp³d hybridisation. The molecular geometry of BrF₃ is:...
[Medium]Lattice enthalpy of NaCl is 786 kJ mol⁻¹. Which of the following factors most significantly contributes to the high lattice enthalpy of NaCl compared ...
[Medium]Which statement best explains why PF5 is stable while NF5 is not?...
[Hard]Formal charge on oxygen in the nitrate ion (NO3−) using a structure with one double bond and two single bonds is:...
[Easy]Which statement about hydrogen bonding is correct?...
[Hard]Which set lists increasing bond length for the carbon–oxygen bonds?...
[Easy]Predict the hybridisation of carbon in acetylene (C2H2)....
[Medium]In PCl5, axial P–Cl bonds are slightly longer than equatorial because:...
[Easy]The geometry around carbon in CH2=CH2 (ethene) is:...
[Easy]Hybridisation of central atom in SF6 is:...
[Medium]Which species is diamagnetic?...
[Easy]Which factor most strongly increases ionic character in a bond?...
[Medium]Approximate bond dissociation enthalpy of an average C–C single bond is closest to:...
[Easy]Bond order of O2 according to MO theory is:...
[Medium]Which pair correctly matches molecule with geometry?...
[Medium]Number of σ and π bonds respectively in benzene (C6H6) are:...
[Easy]The approximate bond angle in NH3 is:...