plumiIonic bonding: Edexcel GCSE Chemistry questions
Every Edexcel GCSE Chemistry exam question on Ionic bonding (specification points 1.21–1.27), 2018–2025, with its mark scheme and examiner’s report.
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Q2(b)(iii)
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Q6(b)(iv)
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Q3(a)(i)
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Q5(b)(ii)
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Q2(b)(ii)
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Q3(b)(i)
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Q9(a)(i)
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Q4(b)(v)
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Q6(d)
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Q6(b)(iv)
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Q3(a)(i)
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Q6(b)(ii)
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Q9(a)(i)
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Q4(b)(v)
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Q5(c)(ii)
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Q6(a)
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Q2(c)
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Q4(c)(i)
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Q8(c)
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Q4(b)(ii)
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All 36 questions on Ionic bonding, as a list
- June 2025, Paper 2 Foundation, Q2(b)(iii) (1 mark): The formula of potassium chloride is KCl. Give the number of ions in the formula KCl. (1)
- June 2025, Paper 2 Foundation, Q6(b)(iv) (2 marks): Lithium hydroxide contains lithium ions, Li+. Describe how a lithium atom becomes a lithium ion. (2)
- June 2024, Paper 1 Higher, Q3(a)(i) (1 mark): The atomic number of sodium is 11. What is the electronic configuration of the Na+ ion? (1) A 1 B 2.8 C 2.8.1 D 2.8.2
- June 2024, Paper 1 Higher, Q5(b)(ii) (1 mark): The formula of the cadmium ion is Cd2+. 3–. The formula of the phosphate ion is PO4 Which is the formula of cadmium phosphate? (1) A Cd2(PO4)3 B Cd3PO12 C Cd3(P
- June 2024, Paper 1 Foundation, Q2(b)(ii) (1 mark): Ammonium sulfate contains ammonium ions, NH4 +, and sulfate ions, SO4 2–. What is the formula of ammonium sulfate? (1) A NHSO B NH4SO4 C (NH4)2SO4 D NH4(SO4)2
- June 2024, Paper 1 Foundation, Q3(b)(i) (2 marks): Explain, in terms of electrons, how a chlorine atom, Cl, forms a chloride ion, Cl–. (2)
- June 2024, Paper 1 Foundation, Q9(a)(i) (1 mark): The atomic number of sodium is 11. What is the electronic configuration of the Na+ ion? (1) A 1 B 2.8 C 2.8.1 D 2.8.2
- June 2024, Paper 2 Foundation, Q4(b)(v) (1 mark): One of the salts dissolved is barium chloride, BaCl2 . Barium chloride contains the chloride ion, Cl–. Give the formula of the barium ion in barium chloride. (1
- June 2023, Paper 1 Foundation, Q6(d) (4 marks): Sodium reacts with chlorine to form sodium chloride, which contains ionic bonds. Hydrogen reacts with chlorine to form hydrogen chloride, which contains covalen
- June 2023, Paper 2 Foundation, Q6(b)(iv) (1 mark): Sodium chloride contains sodium ions, Na+ , and chloride ions, Cl– . Use this information to state the formula of sodium chloride. (1)
- June 2022, Paper 1 Higher, Q3(a)(i) (1 mark): The atomic number of magnesium is 12. What is the electronic configuration of the Mg2+ ion? (1) A 2 B 2.8 C 2.8.2 D 2.8.4
- June 2022, Paper 1 Higher, Q6(b)(ii) (1 mark): The formula of the sulfate ion is SO4 2−. Which of the following is the formula of titanium sulfate containing the Ti4+ ion? (1) A TiSO4 B Ti2SO4 C Ti(SO4)2 D T
- June 2022, Paper 1 Foundation, Q9(a)(i) (1 mark): The atomic number of magnesium is 12. What is the electronic configuration of the Mg2+ ion? (1) A 2 B 2.8 C 2.8.2 D 2.8.4
- June 2022, Paper 2 Foundation, Q4(b)(v) (2 marks): The solid used in this experiment contained only NH4 3 ions. Give the formula and the name of the solid. (2) formula name
- November 2021, Paper 2 Higher, Q5(c)(ii) (2 marks): Potassium oxide is ionic. Write the electronic configurations for the ions in potassium oxide, K2O. (2) potassium ion: oxide ion:
- November 2021, Paper 2 Higher, Q6(a) (1 mark): Which of the following is the formula for calcium carbonate? (1) A CaCO2 B CaCO3 C Ca(CO)3 D Ca(CO3)2
- November 2020, Paper 1 Higher, Q2(c) (1 mark): The ions present in sodium sulfate are Na+ sodium 2– sulfate SO4 Write the formula of sodium sulfate using this information. (1)
- November 2020, Paper 1 Foundation, Q4(c)(i) (1 mark): Predict the formula of gallium oxide. (1)
- November 2020, Paper 1 Foundation, Q8(c) (1 mark): The ions present in sodium sulfate are Na+ sodium 2– sulfate SO4 Write the formula of sodium sulfate using this information. (1)
- November 2020, Paper 2 Foundation, Q4(b)(ii) (1 mark): The formula of barium chloride is BaCl2. Give the total number of ions in the formula BaCl2. (1)
- June 2019, Paper 1 Foundation, Q6(c)(i) (1 mark): The formula of aluminium oxide is AL,O3. Give the number of ions in the formula Al,O3. (1)
- June 2019, Paper 2 Higher, Q1(a)(ii) (1 mark): The formula of titanium(IV) oxide is TiO2. Deduce the charge of the titanium ion in titanium(IV) oxide. (1)
- June 2019, Paper 2 Higher, Q3(a) (1 mark): An aluminium atom has the atomic number 13 and the mass number 27. Which row shows the numbers of subatomic particles present in an aluminium ion, Al3+? (1) pro
- June 2019, Paper 2 Higher, Q3(d) (2 marks): Sodium reacts with chlorine to form sodium chloride. The electronic configuration of the sodium atom is 2.8.1 and the electronic configuration of the chlorine a
- June 2019, Paper 2 Foundation, Q9(a) (1 mark): An aluminium atom has the atomic number 13 and the mass number 27. Which row shows the numbers of subatomic particles present in an aluminium ion, Al3+? (1) pro
- June 2019, Paper 2 Foundation, Q9(d) (6 marks): Sodium chloride is an ionic compound, containing sodium ions, Na+, and chloride ions, Cl–. Figure 15 shows the electronic configuration of sodium and chlorine.
- June 2018, Paper 1 Higher, Q2(a)(ii) (2 marks): Nickel is a metal. Explain how the structure of a nickel atom, Ni, changes when it forms a nickel ion, Ni2+. (2)
- June 2018, Paper 1 Foundation, Q1(c)(ii) (1 mark): An ammonium ion has the formula NH4 –. A nitrate ion has the formula NO3 Which of the following is the formula for ammonium nitrate? (1) A (NH)4NO3 B (NH4NO)3 C
- June 2018, Paper 1 Foundation, Q5(b) (1 mark): Give the names of the elements combined in barium sulfide. (1)
- June 2018, Paper 1 Foundation, Q8(c)(ii) (2 marks): Nickel is a metal. Explain how the structure of a nickel atom, Ni, changes when it forms a nickel ion, Ni2+. (2)
- Specimen, Paper 1 Higher, Q2(a) (2 marks): The numbers of electrons, neutrons and protons in four particles, W, X, Y and Z, are shown in Figure 5. particle electrons neutrons protons W 9 10 9 X 10 14 12
- Specimen, Paper 1 Higher, Q2(c) (4 marks): Lithium fluoride, LiF, is an ionic compound. It contains lithium cations and fluoride anions. The electronic configurations of a lithium atom and of a fluorine
- Specimen, Paper 1 Higher, Q3(a)(ii) (1 mark): What is the formula of zinc chloride? A ZnCl B Zn2Cl C ZnCl2 D Zn2Cl2 (1)
- Specimen, Paper 1 Foundation, Q9(a) (2 marks): The numbers of electrons, neutrons and protons in four particles, W, X, Y and Z, are shown in Figure 15. particle electrons neutrons protons W 9 10 9 X 10 14 12
- Specimen, Paper 1 Foundation, Q9(b) (4 marks): Lithium fluoride, LiF, is an ionic compound. It contains lithium cations and fluoride anions. The electronic configurations of a lithium atom and of a fluorine
- Specimen, Paper 2 Higher, Q10(a) (1 mark): Each of these substances forms ions in solution. One mole of the following substances is dissolved in 1 dm3 of water. Which solution contains the greatest numbe
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