Group-17 P block elements Halogens

Group 17 Elements Quiz

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Test your knowledge on the p-block elements of Group 17 (Halogens) for JEE and NEET.

1. The general electronic configuration of Group 17 elements is:

• $ns^2 np^5$
• $ns^2 np^4$
• $ns^2 np^6$
• $ns^2 np^3$

2. Which of the following halogens has the highest electronegativity?

• Chlorine (Cl)
• Bromine (Br)
• Fluorine (F)
• Iodine (I)

3. The correct order of decreasing oxidizing power of the halogens is:

• $F_2 > Cl_2 > Br_2 > I_2$
• $I_2 > Br_2 > Cl_2 > F_2$
• $Cl_2 > F_2 > Br_2 > I_2$
• $F_2 > Br_2 > Cl_2 > I_2$

4. Which of the following elements has the highest electron gain enthalpy?

• Fluorine (F)
• Chlorine (Cl)
• Bromine (Br)
• Iodine (I)

5. The bond dissociation enthalpy of $F_2$ is lower than that of $Cl_2$. Why?

• Smaller atomic size of F.
• High intermolecular forces in $F_2$.
• Repulsion between lone pairs of electrons of F atoms.
• Higher electronegativity of F.

6. Which of the following acids is the strongest?

• HF
• HCl
• HBr
• HI

7. The correct order of bond dissociation enthalpy for the halogens is:

• $F_2 < Cl_2 < Br_2 < I_2$
• $I_2 < Br_2 < F_2 < Cl_2$
• $Cl_2 > Br_2 > F_2 > I_2$
• $F_2 > Cl_2 > Br_2 > I_2$

8. Which of the following is an interhalogen compound?

• $ICl$
• $NaCl$
• $H_2O$
• $HClO$

9. The phenomenon of allotropy is shown by which of the following halogens?

• Fluorine (F)
• Chlorine (Cl)
• Iodine (I)
• All halogens

10. The correct order of decreasing acidic strength of the hydrogen halides is:

• HF > HCl > HBr > HI
• HI > HBr > HCl > HF
• HCl > HBr > HI > HF
• HBr > HI > HCl > HF

11. What is the hybridization of the central atom in $ClF_3$?

• $sp^3$
• $sp^3d$
• $sp^3d^2$
• $sp^2$

12. The bleaching action of chlorine is due to:

• Oxidation
• Reduction
• Hydrolysis
• Displacement

13. The correct order of bond length for the halogens is:

• $F_2 < Cl_2 < Br_2 < I_2$
• $I_2 < Br_2 < Cl_2 < F_2$
• $F_2 > Cl_2 > Br_2 > I_2$
• $I_2 < Cl_2 < Br_2 < F_2$

14. Which halogen exists as a liquid at room temperature?

• Fluorine (F)
• Chlorine (Cl)
• Bromine (Br)
• Iodine (I)

15. What is the oxidation state of iodine in $HIO_4$?

• +1
• +5
• +7
• -1

16. The hydrogen fluoride (HF) is a liquid, while other hydrogen halides are gases. This is due to:

• Low molecular mass of HF.
• Strong intermolecular hydrogen bonding in HF.
• High ionization enthalpy of F.
• Dispersion forces.

17. Which of the following is the correct order of bond angle for the oxygen halides?

• $Cl_2O < Br_2O$
• $Cl_2O > Br_2O$
• $Cl_2O = Br_2O$
• Cannot be determined

18. The number of lone pairs on the central atom in $ICl_4^-$ is:

• 1
• 2
• 3
• 0

19. Which of the following is an amphoteric oxide?

• $Cl_2O_7$
• $Cl_2O$
• $I_2O_5$
• None of the above

20. The correct order of decreasing thermal stability of the hydrogen halides is:

• HF > HCl > HBr > HI
• HI > HBr > HCl > HF
• HBr > HI > HCl > HF
• HCl > HBr > HI > HF

21. The most abundant halogen in the Earth's crust is:

• Fluorine (F)
• Chlorine (Cl)
• Bromine (Br)
• Iodine (I)

22. Which of the following halogens has a positive electron gain enthalpy?

• Fluorine (F)
• Chlorine (Cl)
• Iodine (I)
• None of the above

23. The correct order of boiling points for the hydrogen halides is:

• HF > HI > HBr > HCl
• HI > HBr > HCl > HF
• HI > HF > HBr > HCl
• HCl > HBr > HI > HF

24. What is the hybridization of the central atom in $IF_7$?

• $sp^3d^2$
• $sp^3d^3$
• $sp^3d$
• $sp^3$

25. The correct order of decreasing ionic character of the halides is:

• MF > MCl > MBr > MI
• MI > MBr > MCl > MF
• MCl > MBr > MI > MF
• MF < MCl < MBr < MI

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