Polarization and Fajan's Rule Quiz Online Practice Test

1. Which molecule features the overlapping of sp³d² and p orbitals?

PCl₅

BrF₅

ClF₃

IF₇

2. In the homolytic cleavage of the C-C bond in ethane (C₂H₆), what is the hybridization of the carbon atom in the resulting intermediate?

sp³ hybridized

sp² hybridized

sp hybridized

sp³d hybridized

3. Which of the following compounds features a trigonal bipyramidal electron pair geometry with three equatorial positions occupied by lone pairs?

AlCl₃

XeF₂

Pt(NH₃)₂Cl

CH₃MgBr

4. Which of the following statements is correct?

Cations with 18 electron shells have greater polarizing power than those with 8-electron shells.

Inner shell electrons poorly shield the nucleus, leading to increased electronegativity in 18-electron shell cations.

CuCl is covalent, while NaCl is ionic.

All of these

5. In a BrF₃ molecule, why do the lone pairs occupy equatorial positions?

To minimize lone pair-bond pair repulsion only

To minimize bond pair-bond pair repulsion only

To minimize both lone pair-lone pair and lone pair-bond pair repulsion

To minimize lone pair-lone pair repulsion only

6. The hybridization of phosphorus in POCl₃ matches that of which other element?

Phosphorus in PCl₃

Sulfur in SF₄

Chlorine in ClF₃

Boron in BCl₃

7. Given a diatomic molecule with a bond length of 1.25 Å and a dipole moment of 1.0 D, what is the percentage of ionic character in the bond?

10.66%

12.35%

16.66%

19.33%

8. For a planar molecule MLₓ with six pairs of electrons around the central atom M, what is the value of x?

9. Determine the total number of electron pairs for the molecules PCl₅, PCl₄⁺, and PCl₆⁻, in that order.

20, 16, 24

24, 16, 20

16, 20, 24

24, 20, 16

10. If a water molecule were linear, which of the following would be true?

It would have an exceptionally high boiling point

It would exhibit high reactivity

Its dipole moment would be zero

It would exhibit high ionic character

11. According to Fajan's rules, which factor enhances the covalent character of ionic compounds?

Large cation and small anion

Large cation and large anion

Small cation and large anion

Small cation and small anion

12. What is the correct sequence for the covalent character of alkali metal chlorides?

LiCl < NaCl < KCl < RbCl < CsCl

CsCl < RbCl < KCl < NaCl < LiCl

LiCl > NaCl > KCl > RbCl > CsCl

LiCl = NaCl = KCl = RbCl < CsCl

13. Which of the following statements about polarization is accurate?

A cation with a high charge causes the greatest polarization

A large cation induces a greater degree of polarization

A cation with a smaller radius results in minimal polarization

A small anion is prone to significant polarization

14. Which ion among the following is most effective at polarizing an anion?

Mg²⁺

Al³⁺

Na⁺

Ca²⁺

15. Which compound among the following exhibits the greatest covalent character?

NaI

MgI₂

AlCl₃

AlI₃

16. According to Fajan's rules, which scenario promotes covalent bonding?

Large cation and small anion

Large cation and large anion

Small cation and large anion

Small cation and small anion

17. Which sequence correctly represents the increasing order of polarizability for halide ions?

F⁻ < I⁻ < Br⁻ < Cl⁻

Cl⁻ < Br⁻ < I⁻ < F⁻

I⁻ < Br⁻ < Cl⁻ < F⁻

F⁻ < Cl⁻ < Br⁻ < I⁻

18. Which compounds among LiCl, RbCl, BeCl₂, and MgCl₂ demonstrate the maximum and minimum ionic characteristics, respectively?

LiCl and RbCl

RbCl and BeCl₂

RbCl and MgCl₂

MgCl₂ and BeCl₂

19. When does the polarization power of a cation increase?

When its size decreases

When its size increases

When the anion has a higher polarizing power

When the covalent nature of the bond increases

20. Which factor directly influences the polarizing power of a cation?

Cation size

Cation charge

Cation electronegativity

Anion size

Test Name:	Polarization and Fajan’s Rule Quiz
Subject Category:	Chemistry
Test Type:	Multiple Choice Questions
Total Score / Questions:	20 / 20
Time Allowed:	10 Min
Who Should Practice this Test:	Students, job seekers, or professionals preparing for competitive exams and interviews.

Polarization and Fajan’s Rule Quiz Online Practice Test

Polarization and Fajan’s Rule MCQ Quiz Online Practice Test