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
21–30 of 59 · Easy
Question 21
3 marks · Easy
Answer and see the solution →Outer shell electrons for Group 1 and Group 7 elements Element Number of outer shell electrons Lithium (Li) 1 Sodium (Na) 1 Fluorine (F) 7 Chlorine (Cl) 7 (a)[1 mark]State the electronic configuration of a lithium atom.
(b)[1 mark]Colour or underline the value in the table that shows how many electrons a fluorine atom has in its outer shell.
(c)[1 mark]Using information from the table, explain why lithium and fluorine are likely to react together to form an ionic compound.
Question 22
1 mark · Easy
Answer and see the solution →Draw a dot-and-cross diagram to represent the chloride ion in calcium chloride.
Question 23
3 marks · Easy
Answer and see the solution →(a)[1 mark]Give the electronic configuration of a fluoride ion (F^-).
(b)[1 mark]Explain how a lithium atom changes to a lithium ion when forming lithium fluoride.
(c)[1 mark]Draw a dot-and-cross diagram for the lithium ion formed.
Question 24
2 marks · Easy
Answer and see the solution →How many electrons are lost by one calcium atom and how many are gained by each chlorine atom when forming calcium chloride? Give your answers in the form: electrons lost by Ca, electrons gained by each Cl.
Question 25
1 mark · Easy
Answer and see the solution →Write the formula for the ionic compound formed between aluminium ions and chloride ions.
Question 26
3 marks · Easy
Answer and see the solution →(a)[1 mark]State the formula of the calcium ion and the oxide ion.
(b)[1 mark]What is the simplest formula for the ionic compound formed from these ions?
(c)[1 mark]Explain why the compound has this formula.
Question 27
2 marks · Easy
Answer and see the solution →Calculate the formula for the ionic compound formed when magnesium ions combine with nitrate ions. Show how the charges are balanced in your answer.
Question 28
2 marks · Easy
Answer and see the solution →Ammonium sulfate has the formula (NH4)2SO4. Explain why two ammonium ions are needed in this compound.
Question 29
1 mark · Easy
Answer and see the solution →State the formula for the ionic compound formed when sodium ions combine with bromide ions.
Question 30
3 marks · Easy
Answer and see the solution →The ions formed by magnesium and sulfur combine to make an ionic compound.
(a)[1 mark]State the symbol and charge of the ion formed by magnesium.
(b)[1 mark]State the symbol and charge of the ion formed by sulfur.
(c)[1 mark]Write the formula for the ionic compound formed from these ions.