Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Section
Other examples of ionic bonding
19 practice questions
Practice questions
1–8 of 8 · Easy
Question 1
1 mark · Easy
Answer and see the solution →State the charge on the ion formed by a chlorine atom.
Question 2
3 marks · Easy
Answer and see the solution →(a)[1 mark]State the group number of a magnesium atom in the periodic table.
(b)[1 mark]Describe what happens to a magnesium atom when it forms an ion.
(c)[1 mark]State the charge on the ion formed.
Question 3
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 4
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 5
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 6
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 7
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 8
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.