Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Chapter
Ionic Bonding
143 practice questions
Topics covered
- Ionic bonding in magnesium oxide19 practice questions
- Other examples of ionic bonding19 practice questions
- Calcium chloride19 practice questions
- Formulae for ionic compounds18 practice questions
- Giant ionic structures19 practice questions
- The physical properties of ionic substances19 practice questions
- The electrical conductivity of ionic substances19 practice questions
Practice questions
1–10 of 24 · Hard
Question 1
2 marks · Hard
Answer and see the solution →Describe how a dot-and-cross diagram can be used to show the formation of magnesium oxide (MgO) from magnesium and oxygen atoms. Your answer should include arrangements and charges.
Question 2
5 marks · Hard
Answer and see the solution →This question is about the ionic bonding in magnesium oxide (MgO).
(a)[1 mark]State which ions are present in magnesium oxide and what charges they carry.
(b)[2 marks]Explain in detail why there is a strong electrostatic force between these ions.
(c)[2 marks]Suggest, with a reason, how the strength of ionic bonding in magnesium oxide would change if the oxide ions were replaced by fluoride ions (F^-).
Question 3
2 marks · Hard
Answer and see the solution →State the ion formed when a magnesium atom loses electrons, and give its charge. What type of ion is this called?
Question 4
2 marks · Hard
Answer and see the solution →A calcium atom (Ca) forms a Ca ion. Describe what happens to the atom when it forms this ion and explain why it forms an ion with a charge of 2+.
Question 5
5 marks · Hard
Answer and see the solution →Phosphorus is a Group 5 element with atomic number 15.
(a)[1 mark]Describe how a phosphorus atom forms a phosphide ion ().
(b)[1 mark]Write the electronic configuration of a phosphide ion.
(c)[2 marks]Explain why the phosphide ion is isoelectronic with a noble gas atom. Name the noble gas.
(d)[1 mark]State the total number of electrons in a phosphide ion.
Question 6
2 marks · Hard
Answer and see the solution →Explain why a bromide ion () has the same number of electrons as a krypton atom.
Question 7
2 marks · Hard
Answer and see the solution →Describe how electrons are transferred when a lithium atom and a fluorine atom react to form lithium fluoride. Your answer should explain how this transfer leads to the formation of ions.
Question 8
5 marks · Hard
Answer and see the solution →Calcium chloride is formed when calcium reacts with chlorine.
(a)[1 mark]State the electronic configuration of a calcium atom and a chlorine atom.
(b)[2 marks]Explain how calcium and chlorine atoms achieve full outer shells when forming calcium chloride.
(c)[2 marks]Draw a dot-and-cross diagram to show the ions formed in calcium chloride. Show only the outer shells.
Question 9
2 marks · Hard
Answer and see the solution →State the charge on each ion and the number of electrons in the outer shell of each ion in lithium fluoride.
Question 10
2 marks · Hard
Answer and see the solution →Iron(III) oxide is an ionic compound formed from Fe3+ and O2– ions. State the correct formula for iron(III) oxide and explain why this is the correct formula.