Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Chapter
The Periodic Table
103 practice questions
Topics covered
- The arrangement of the electrons in an atom19 practice questions
- Drawing diagrams of electronic configurations19 practice questions
- Electronic configurations and the periodic table19 practice questions
- Metals and non-metals in the periodic table18 practice questions
- Differences between the properties of metals and non-metals19 practice questions
Practice questions
51–60 of 103
Question 51
4 marks · Normal
Answer and see the solution →The table shows the electronic configurations and Periodic Table positions for four elements.
Electronic configurations and positions for four elements Element Electronic configuration Group Period A 2,8,4 B 2,8,8,1 C 2,7 D 2,8,5 (a)[2 marks]Complete the table by entering the group and period for each element.
(b)[2 marks]Which element is in the same group as carbon? Give a reason for your answer.
Question 52
1 mark · Normal
Answer and check →Which of the following elements is in period 2 and group 7 of the Periodic Table?
- A.Fluorine (2,7)
- B.Chlorine (2,8,7)
- C.Nitrogen (2,5)
- D.Neon (2,8)
Question 53
2 marks · Normal
Answer and see the solution →State the group and period of silicon (atomic number 14) and explain your reasoning.
Question 54
4 marks · Normal
Answer and see the solution →(a)[1 mark]Draw or describe the electronic configuration for sodium (Na, atomic number 11).
(b)[1 mark]Identify its group and period in the Periodic Table.
(c)[2 marks]Explain how sodium’s position in the Periodic Table is related to its electronic configuration.
Question 55
2 marks · Hard
Answer and see the solution →An unknown element X has the electronic configuration 2, 8, 3. State the group and period of element X in the Periodic Table.
Question 56
5 marks · Hard
Answer and see the solution →An element Y has the atomic number 15.
(a)[1 mark]Write the electronic configuration for element Y.
(b)[1 mark]State the number of electrons in the outer shell of element Y.
(c)[2 marks]Identify the group number and the period number for element Y.
(d)[1 mark]Explain how the electronic configuration relates to the group and period for element Y.
Question 57
2 marks · Hard
Answer and see the solution →Explain why an atom with the electronic configuration 2, 7 is placed in both Group 7 and Period 2 of the Periodic Table.
Question 58
1 mark · Easy
Answer and see the solution →State whether the element magnesium (Mg) is a metal or a non-metal.
Question 59
3 marks · Easy
Answer and see the solution →This question is about similarities in chemical properties in groups and the inertness of Group 0 elements.
(a)[1 mark]State the number of electrons in the outer shell of a fluorine atom.
(b)[1 mark]Explain why the elements in Group 7 have similar chemical properties.
(c)[1 mark]Explain why helium is unreactive.
Question 60
2 marks · Easy
Answer and see the solution →Calcium (Ca) forms an oxide when it reacts with oxygen. The formula of the oxide is either CaO or CaO2. Using your knowledge of the periodic table, determine which formula is correct for the oxide of calcium and state how many oxygen atoms are present in the formula.