Answers section
Questions 1.7(a) 
Refer to the Periodic Table as you answer the following questions
- Identify 3 unreactive elements among the first 20 elements (A = 1 to 20). In which group are these elements found?
- Name all the elements within the atomic numbers 1 to 20, which are expected to react by losing electrons. Identify the groups to which these elements belong.
- Name all the elements within the atomic numbers 1 to 20, which are expected to react by losing electrons. What are the groups to which these element belong?
Answers to Questions 1.7(a) 
- Helium, Neon, Argon. Group VIII
- Nitrogen, Oxygen, Fluorine, Phosphorus, Sulphur, Chlorine. Groups V, VI, and VII.
- Lithium, Beryllium, Boron, Sodium, Magnesium, Aluminium, Potassium, Calcium.