The Periodic Table
20 past-paper questions on The Periodic Table · examined 2020–2025.
20253 questions
20 Part of the Periodic Table is shown. W X Z Y W, X, Y and Z are not the correct symbols of the elements. Which statement is correct? A The compound formed between X and W has covalent bonds. B W and Y are both gases at r.t.p. that contain covalent bonds. C X and Y react together more vigorously than Z and Y at r.t.p. D X and Z both have two outer-shell electrons.
23 Which statement about the elements in Group VIII of the Periodic Table is correct? A Going down the group, the number of electrons in the atom increases by eight for each noble gas. B Going down the group, the number of electrons in the outer shell increases by eight for each noble gas. C The number of electrons in the outer shell is the same for each noble gas. D The outer shell of each noble gas is fully occupied by electrons.
5070/22/M/J/25 © UCLES 2025 6 Bromine, Br 2 , is in Group VII of the Periodic Table. (a) The melting point of bromine is –7 °C and the boiling point is 59 °C. (i) Explain why bromine is a solid at –50 °C. ........................................................................................................................................... ..................................................................................................................................... [1] (ii) Describe the arrangement and motion of bromine molecules at –50 °C. ............................................
20234 questions
2 X, Y and Z are elements. X and Y are in the same period of the Periodic Table. Y and Z are in the same group of the Periodic Table. What are possible electronic configurations for X, Y and Z? X Y Z A 2,4 2,7 2,8,4 B 2,4 2,7 2,8,7 C 2,4 2,8,4 2,8,7 D 2,8,4 2,8,7 2,4
21 The elements are arranged in groups and periods in the Periodic Table. Which row is correct? group determined by period determined by elements in the Periodic Table are arranged by A the number of electrons in the outer shell the number of occupied shells increasing proton number B the number of occupied shells the number of electrons in the outer shell increasing mass number C the number of electrons in the outer shell the number of occupied shells increasing mass number D the number of occupied shells the number of electrons in the outer shell increasing proton number
© UCLES 2023 5070/11/M/J/23 22 Sodium, potassium and rubidium are in Group I of the Periodic Table. Chlorine, bromine and iodine are in Group VII. Which statement is correct? A Bromine displaces chlorine from an aqueous solution of sodium chloride. B Iodine is discharged at the negative electrode when concentrated aqueous potassium iodide is electrolysed. C Rubidium has a greater tendency to form positive ions than potassium. D Sodium and potassium both react with water but the reaction is more violent with sodium. 9
5070/21/O/N/23 © UCLES 2023 2 This question is about metals. (a) Potassium is an element in Group I of the Periodic Table. Copper is a transition element. State two physical properties of potassium that are different from those of copper. 1 ................................................................................................................................................ 2 ................................................................................................................................................ [2] (b) Complete the diagram in Fig. 2.1 to show the electronic con
20221 question
© UCLES 2022 5070/11/O/N/22 [Turn over C 56 80 D 56 35.5 4 6 Which statement about iodine atoms and iodide ions is correct? A They are both isotopes of iodine. B They undergo the same chemical reactions. C They have the same number of protons. D They have the same physical properties. 7 The element chlorine has two isotopes, l C 35 17 and . C 37 17 l In the Periodic Table, chlorine is shown as . C 35.5 17 l Which row shows the correct percentage of each isotope in a sample of naturally occurring chlorine? percentage of l C 35 17 percentage of l C 37 17 A 25 75 B 40 60 C 50 50
You're viewing 8 of 20 questions
Free members see the first 8. Join Learning DEN Pro to unlock all 20 questions on this chapter — plus AI topical search, downloadable topical PDF packs, and examiner marking on any answer. From $9/month.
Don't just read the solution — get your own answer marked
Write your answer to any Chemistry past-paper question, photograph it, and Learning DEN marks it like a real examiner — marks awarded, where you lost them, and your predicted grade. 3 free gradings to start.