Quiz - Fajan's Rule

Fajan's Rule Quiz

Test your knowledge on Fajan's Rule for JEE and NEET.

1. According to Fajan's rule, a covalent bond is favored by:

• Large cation, small anion
• Large cation, large anion
• Small cation, large anion
• Small cation, small anion

2. Which of the following has the most covalent character?

• $NaCl$
• $NaI$
• $NaBr$
• $NaF$

3. The covalent character of metal halides for a given metal:

• Increases with an increase in anion size
• Decreases with an increase in anion size
• Does not depend on anion size
• Depends on the metal only

4. Which of the following is most ionic?

• $BeCl_2$
• $MgCl_2$
• $CaCl_2$
• $SrCl_2$

5. The melting point of alkali metal halides decreases in the order:

• $LiF > LiCl > LiBr > LiI$
• $LiF < LiCl < LiBr < LiI$
• $LiCl > LiF > LiBr > LiI$
• $LiF > LiI > LiBr > LiCl$

6. Which statement is correct about the polarizing power of a cation?

• Inversely proportional to its charge
• Directly proportional to its size
• Directly proportional to its charge and inversely proportional to its size
• Inversely proportional to its charge and directly proportional to its size

7. Which of the following compounds is the least soluble in water?

• $AgF$
• $AgCl$
• $AgBr$
• $AgI$

8. The order of covalent character is:

• $LiCl > BeCl_2 > BCl_3 > CCl_4$
• $LiCl < BeCl_2 < BCl_3 < CCl_4$
• $LiCl > CCl_4 > BeCl_2 > BCl_3$
• $LiCl < BeCl_2 > BCl_3 < CCl_4$

9. The solubility of alkaline earth metal sulfates in water decreases in the order:

• $BeSO_4 > MgSO_4 > CaSO_4 > SrSO_4 > BaSO_4$
• $BaSO_4 > SrSO_4 > CaSO_4 > MgSO_4 > BeSO_4$
• $BeSO_4 > BaSO_4 > CaSO_4 > MgSO_4 > SrSO_4$
• $MgSO_4 > BeSO_4 > CaSO_4 > SrSO_4 > BaSO_4$

10. Which factor does NOT influence the extent of polarization?

• Charge of the cation
• Size of the anion
• Magnetic moment of the cation
• Charge of the anion

11. The thermal stability of carbonates of alkali metals decreases as:

• $Li_2CO_3 > Na_2CO_3 > K_2CO_3 > Rb_2CO_3 > Cs_2CO_3$
• $Cs_2CO_3 > Rb_2CO_3 > K_2CO_3 > Na_2CO_3 > Li_2CO_3$
• $Li_2CO_3 < Na_2CO_3 > K_2CO_3 > Rb_2CO_3 > Cs_2CO_3$
• $Na_2CO_3 < K_2CO_3 > Li_2CO_3 > Rb_2CO_3 > Cs_2CO_3$

12. Which of the following has the highest melting point?

• $NaCl$
• $KCl$
• $RbCl$
• $CsCl$

13. The correct order of decreasing thermal stability of the following compounds is:

• $K_2CO_3 > Na_2CO_3 > Li_2CO_3$
• $Na_2CO_3 > K_2CO_3 > Li_2CO_3$
• $Li_2CO_3 > K_2CO_3 > Na_2CO_3$
• $K_2CO_3 > Li_2CO_3 > Na_2CO_3$

14. Which of the following has the highest lattice energy?

• $LiCl$
• $NaCl$
• $KCl$
• $CsCl$

15. The polarizability of an anion is proportional to its:

• Charge density
• Ionic radius
• Charge to size ratio
• Polarizing power

16. Which of the following has a high degree of covalence?

• $SnCl_4$
• $SnCl_2$
• $NaCl$
• $MgCl_2$

17. Which of the following compounds has the most ionic character?

• $AgF$
• $AgCl$
• $AgBr$
• $AgI$

18. Fajan's rule is based on the concept of:

• Electronegativity difference
• Polarization
• Bond energy
• Lattice energy

19. Which of the following is an exception to Fajan's rule?

• $AgCl$ is more covalent than $AgF$
• $LiI$ is more covalent than $LiCl$
• $MgCl_2$ is less covalent than $CaCl_2$
• The melting point of $LiF$ is higher than that of $LiCl$

20. According to Fajan's Rule, which compound has the highest degree of ionic character?

• $LiCl$
• $NaCl$
• $KCl$
• $CsCl$

Quiz Results