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
11–20 of 59 · Easy
Question 11
2 marks · Easy
Answer and see the solution →A fluorine atom (atomic number 9) forms a fluoride ion. Calculate: (i) The number of protons in the fluoride ion. (ii) The number of electrons in the fluoride ion. Give both answers.
Question 12
2 marks · Easy
Answer and see the solution →Explain, using electronic configuration, why a potassium ion (K+) has the same number of electrons as an argon atom.
Question 13
3 marks · Easy
Answer and see the solution →Information about elements and their ions Element Group number Atomic number Ion formed Number of electrons in ion Calcium 2 20 Ca2+ Chlorine 7 17 Cl– Aluminium 3 13 Al3+ (a)[3 marks]Complete the table by giving the number of electrons in each ion.
Question 14
1 mark · Easy
Answer and see the solution →Which ion is formed when a nitrogen atom gains three electrons? Give the symbol, including charge.
Question 15
3 marks · Easy
Answer and see the solution →(a)[2 marks]Sodium (Na) and sulfur (S) are both elements found in the periodic table. State the group number of each element.
(b)[1 mark]Describe how the ions formed by sodium and sulfur achieve noble gas configurations.
Question 16
2 marks · Easy
Answer and see the solution →An oxygen atom (atomic number 8) forms an oxide ion. How many electrons has the oxide ion? Show your working.
Question 17
1 mark · Easy
Answer and see the solution →State the number of electrons transferred from a lithium atom to a fluorine atom when lithium fluoride is formed.
Question 18
3 marks · Easy
Answer and see the solution →(a)[1 mark]State the formula of the calcium ion formed in calcium chloride.
(b)[1 mark]State the formula of the chloride ion formed in calcium chloride.
(c)[1 mark]Draw a dot-and-cross diagram to show the ions in calcium chloride.
Question 19
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 20
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.