1. Which pair would form the strongest ionic attraction?
- Sodium and fluorine
- Magnesium and oxygen
- Hydrogen and chlorine
- Carbon and oxygen
Answer: B) Magnesium and oxygen
MCQs / Chemistry / Ionic bonding
Ionic bonding MCQs — Chemistry
35 multiple-choice questions on Ionic bonding from Chemistry, each with the correct answer and, where available, a teacher's explanation. Read through them to revise the chapter, then practise the same questions one by one to test yourself.
2. A hard solid with a giant ionic lattice is most likely
- Sodium chloride
- Methane
- Oxygen
- Bromine
Answer: A) Sodium chloride
3. Lithium reacts with fluorine to form
- LiF
- Li₂F
- LiF₂
- Li₂F₂
Answer: A) LiF
4. Which property suggests a substance is ionic?
- Low melting point
- Does not conduct when molten
- High melting point and conducts when molten
- Soft solid
Answer: C) High melting point and conducts when molten
5. How does sodium form a positive ion?
- Gains one electron
- Loses one electron
- Gains two electrons
- Shares one electron
Answer: B) Loses one electron
6. What happens when oxygen forms an oxide ion?
- Loses 2 electrons
- Gains 1 electron
- Gains 2 electrons
- Shares electrons
Answer: C) Gains 2 electrons
7. Why does sodium chloride have a higher melting point than hydrogen chloride?
- Strong ionic attractions
- Weaker bonds
- More molecules
- Metallic bonding
Answer: A) Strong ionic attractions
8. In the formation of magnesium oxide, magnesium
- gains 2 electrons
- loses 2 electrons
- gains 1 electron
- shares 2 electrons
Answer: B) loses 2 electrons
9. A bromide ion has
- gained one electron
- lost one electron
- gained two electrons
- lost two electrons
Answer: A) gained one electron
10. Ionic bonding forms by
- sharing electrons
- transferring electrons
- sharing protons
- transferring neutrons
Answer: B) transferring electrons
11. Element P forms P⁺ and element Q forms Q⁻. What compound forms?
- PQ
- P₂Q
- PQ₂
- P₂Q₂
Answer: A) PQ
12. What is the formula of magnesium chloride?
- MgCl
- Mg₂Cl
- MgCl₂
- Mg₂Cl₂
Answer: C) MgCl₂
13. Which property is typical of potassium chloride?
- Low melting point
- Giant ionic lattice
- Soft solid
- Does not dissolve in water
Answer: B) Giant ionic lattice
14. Element X has electron arrangement 2,8,1. What group is it in?
- 1
- 2
- 7
- 8
Answer: A) 1
15. A Group 7 element forms an ion by
- gaining one electron
- losing one electron
- gaining two electrons
- losing two electrons
Answer: A) gaining one electron
16. Potassium iodide conducts electricity when molten because
- ions can move freely
- atoms move freely
- electrons are shared
- molecules move
Answer: A) ions can move freely
17. Which substance has the higher melting point?
- Potassium bromide
- Methane
Answer: A) Potassium bromide
Explanation: Potassium bromide is ionic — a giant lattice with strong forces to overcome. Methane is a small molecule with weak intermolecular forces.
18. What is formed when sodium transfers an electron to chlorine?
- Covalent bond
- Metallic bond
- Ionic bond
- Hydrogen bond
Answer: C) Ionic bond
19. What ion does potassium form?
- K²⁺
- K⁺
- K⁻
- K²⁻
Answer: B) K⁺
20. Why does potassium bromide have a higher melting point than methane?
- Strong ionic attractions
- Weak intermolecular forces
- Metallic bonding
- Fewer particles
Answer: A) Strong ionic attractions
21. Which compound is ionic?
- Carbon dioxide
- Water
- Potassium bromide
- Methane
Answer: C) Potassium bromide
22. What type of bonding is present in ethanol?
- Ionic
- Metallic
- Covalent
- Ionic and metallic
Answer: C) Covalent
23. Which statement about sodium fluoride (NaF) is correct?
- It contains molecules
- It is a giant ionic lattice
- It conducts electricity when solid
- It has a low melting point
Answer: B) It is a giant ionic lattice
24. Why does magnesium oxide have a high melting point?
- Strong covalent bonds in molecules
- Strong electrostatic attraction between ions
- Weak intermolecular forces
- Metallic bonding
Answer: B) Strong electrostatic attraction between ions
25. What ions are formed when calcium reacts with chlorine?
- Ca⁺ and Cl⁻
- Ca²⁺ and Cl⁻
- Ca⁺ and Cl²⁻
- Ca²⁺ and Cl²⁻
Answer: B) Ca²⁺ and Cl⁻
Page 1 of 2 Next