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
41–50 of 143
Question 41
2 marks · Easy
Answer and see the solution →How many electrons are present in the outer shell of a lithium atom and a fluorine atom before they react to form lithium fluoride? Give your answers as two numbers separated by a comma.
Question 42
2 marks · Easy
Answer and see the solution →Explain why two chlorine atoms are needed to react with one calcium atom to form calcium chloride.
Question 43
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 44
1 mark · Easy
Answer and see the solution →Draw a dot-and-cross diagram to represent the chloride ion in calcium chloride.
Question 45
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 46
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 47
2 marks · Normal
Answer and see the solution →Draw a dot-and-cross diagram to represent the ionic bonding in lithium fluoride.
Question 48
4 marks · Normal
Answer and see the solution →Calcium chloride is an ionic compound formed from calcium and chlorine.
(a)[1 mark]State the formula of the calcium ion and the chloride ion.
(b)[2 marks]Draw a dot-and-cross diagram to show how electrons are transferred when calcium reacts with chlorine to form calcium chloride.
(c)[1 mark]Explain why two chlorine atoms are needed for each calcium atom in this compound.
Question 49
2 marks · Normal
Answer and see the solution →Lithium fluoride forms when lithium reacts with fluorine. Draw a dot-and-cross diagram to show the ions present in lithium fluoride after the ionic bond has formed.
Question 50
3 marks · Normal
Answer and see the solution →(a) Lithium fluoride is formed when a lithium atom reacts with a fluorine atom. Each atom transfers electrons to form ions.
Draw a dot-and-cross diagram to show the ionic bonding in lithium fluoride. Label each ion clearly and show the charges.