Atomic structure and the Periodic Table — Paper 2 · IGCSE Science - Combined 0653

22 Which statements about elements in the Periodic Table are correct? 1 The higher the group number, the more metallic an element is. 2 The group number is equal to the number of electrons in the outer shell. 3 Elements on the left of the Periodic Table form ions by losing electrons. A 1 only B 1 and 2 C 1 and 3 D 2 and 3

1 marks

Answer: D

This question in 0653/22 Feb/March 2017

16 The atomic (proton) number of magnesium is 12. Which diagram shows the electronic structure of a magnesium atom? A B key = electron = nucleus C D

1 marks

Answer: B

This question in 0653/21 May/June 2017

16 Which row describes the electronic structures of a chlorine atom and of a sodium ion? chlorine atom sodium ion A 2,8,7 2,8 B 2,8,7 2,8,8 C 2,8,8 2,8 D 2,8,8 2,8,8

1 marks

Answer: A

This question in 0653/22 May/June 2017

16 What is the electronic structure of a chlorine atom, Cl, and of a chloride ion, Cl –? chlorine atom chloride ion A 2,8,6 2,8,8 B 2,8,7 2,8,6 C 2,8,7 2,8,8 D 2,8,8 2,8,7

1 marks

Answer: C

This question in 0653/21 Oct/Nov 2017

17 The electronic structure of a sodium atom is 2,8,1. The electronic structure of a sodium ion is 2,8. Which statement is not correct? A Sodium ions form metallic bonds. B The electronic structure of a sodium ion is more stable than that of a sodium atom. C The sodium atom loses one electron to become an ion. D The sodium ion has a noble gas electronic structure.

1 marks

Answer: A

This question in 0653/22 Oct/Nov 2017

16 Which statement about atoms and ions is not correct? A A chlorine atom loses one electron to obtain a noble gas electronic structure. B A magnesium atom has two valency electrons. C A sodium ion, Na+, has eight electrons in its outer shell. D Oxygen atoms and oxide ions each have two occupied electron shells.

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Answer: A

This question in 0653/22 Feb/March 2018

16 Which is the electronic structure of a noble gas? A 2,6 B 2,8 C 2,8,1 D 2,8,7

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Answer: B

This question in 0653/23 Oct/Nov 2018

16 An atom of an element has the proton number 16 and the nucleon number 36. Which row shows the number of neutrons in the atom and the group number of the element in the Periodic Table? number of neutrons group number in the atom A 20 VI B 20 VIII C 36 VI D 36 VIII

1 marks

Answer: A

This question in 0653/22 May/June 2019

21 An element has the electronic structure 2,8,1. Which row describes this element? group number in metal / non-metal the Periodic Table A I metal B I non-metal C II metal D II non-metal

1 marks

Answer: A

This question in 0653/23 May/June 2019

17 Some information about a sodium ion is shown. proton nucleon number of number of number of particle number number protons neutrons electrons Na+ 11 23 11 X Y What are the values of X and Y? X Y A 11 10 B 11 11 C 12 10 D 12 11

1 marks

Answer: C

This question in 0653/22 Feb/March 2020

16 A magnesium ion, Mg2+, is formed from a magnesium atom, Mg. Which row about the numbers of protons and neutrons in the magnesium ion and in the magnesium atom is correct? number of protons number of neutrons A larger in Mg2+ than in Mg same in Mg and Mg2+ B same in Mg and Mg2+ same in Mg and Mg2+ C same in Mg and Mg2+ smaller in Mg2+ than in Mg D smaller in Mg2+ than in Mg larger in Mg2+ than in Mg

1 marks

Answer: B

This question in 0653/22 May/June 2020

22 Which row shows the relationship between the group number of an element, its number of outer shell electrons and its metallic / non-metallic character? number of outer metallic / non-metallic group number shell electrons character A I 1 non-metal B III 5 metal C V 5 non-metal D VII 1 metal

1 marks

Answer: C

This question in 0653/22 May/June 2020

14 Which statement about the particles is correct? A 1 1H has the same number of protons as neutrons. B 2 H + has the same number of electrons as neutrons. 1 C OH– contains more protons than electrons. D NH3 has the same number of protons as electrons.

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Answer: D

This question in 0653/22 May/June 2021

16 The atomic number of argon is 18. The mass number of argon is 40. How many protons, neutrons and electrons are in an argon atom? protons neutrons electrons A 18 22 18 B 18 22 22 C 22 18 18 D 22 18 22

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Answer: A

This question in 0653/22 Feb/March 2022

14 Which particles are present in the nuclei of hydrogen atoms, H? 1 1 A electrons and neutrons B electrons only C protons and neutrons D protons only

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Answer: D

This question in 0653/21 Oct/Nov 2022

14 An atom of aluminium and an atom of fluorine are represented as shown. 13Al 19 27 9F Which statement is not correct? A The aluminium atom contains four more electrons than the fluorine atom. B The aluminium atom contains four more protons than the fluorine atom. C The aluminium atom contains eight more neutrons than the fluorine atom. D The aluminium atom contains eight more nucleons than the fluorine atom.

1 marks

Answer: C

This question in 0653/22 Oct/Nov 2022

15 What is the relative mass of a proton and the relative charge on a proton? relative mass relative charge A 0.0005 +1 B 0.0005 –1 C 1 –1 D 1 +1

1 marks

Answer: D

This question in 0653/21 May/June 2023

15 What is the definition of nucleon number? A the number of protons in an atom B the number of electrons in an atom C the total number of electrons and neutrons in an atom D the total number of neutrons and protons in an atom

1 marks

Answer: D

This question in 0653/22 May/June 2023

15 The nucleon number of an atom of chlorine is 35. Which statement about this atom is correct? A It contains the same number of neutrons as electrons. B It contains the same number of protons as neutrons. C It contains the same number of protons as electrons. D The numbers of protons, neutrons and electrons are all different from each other.

1 marks

Answer: C

This question in 0653/23 May/June 2023

15 Fluorine and chlorine are in Group VII of the Periodic Table. Which number increases by eight from fluorine to chlorine? A the number of atoms in one molecule B the number of electrons in one atom C the number of electrons in one molecule D the number of nucleons in one atom

1 marks

Answer: B

This question in 0653/22 Feb/March 2024

16 Which statement defines the nucleon number of an atom? A It is the total number of neutrons and protons in the atom. B It is the total number of neutrons and electrons in the atom. C It is the total number of neutrons, protons and electrons in the atom. D It is the total number of neutrons in the atom.

1 marks

Answer: A

This question in 0653/21 May/June 2024

24 Which statement about the properties of the elements in Period 3 of the Periodic Table is correct? A The elements on the left lose electrons more readily. B The elements on the left are less malleable. C The elements on the right are metallic. D The elements on the right form cations.

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Answer: A

This question in 0653/21 May/June 2024

15 Which particle has the smallest mass? A atom B electron C neutron D proton

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Answer: B

This question in 0653/23 Oct/Nov 2024

15 Elements X and Y are among the first 20 elements in the Periodic Table. Element Y has 9 more protons than X. Which statement about these two elements must be correct? A They are both metallic elements. B They are in the same group of the Periodic Table. C They are in different periods of the Periodic Table. D The number of electrons in their outer shell differs by 9.

1 marks

Answer: C

This question in 0653/22 Feb/March 2025

15 A neutral atom of chlorine contains 17 electrons and 18 neutrons. What is the atomic number and what is the mass number of this atom? atomic number mass number A 17 35 B 17 52 C 18 35 D 18 52

1 marks

Answer: A

This question in 0653/21 May/June 2025

16 The elements in Period 2 and Period 3 of the Periodic Table are shown. Period 2 Li Be B C N O F Ne Period 3 Na Mg Al Si P S Cl Ar Which statement about atoms of these elements is correct? A Beryllium and boron have the same number of outer-shell electrons. B Boron and aluminium both have three electron shells. C Oxygen and sulfur have the same number of neutrons. D Phosphorus has eight more protons than nitrogen.

1 marks

Answer: D

This question in 0653/21 May/June 2025

17 An element is in Period 3 of the Periodic Table. Which information is given by the period number of this element? A its proton number B its metallic character C the number of electrons in the outer shell of an atom of the element D the number of electron shells in an atom of the element

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Answer: D

This question in 0653/21 Oct/Nov 2025

21 What is the method by which elements are arranged in the Periodic Table? A by nucleon number B by number of electrons C by number of neutrons D by number of protons

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Answer: D

This question in 0653/22 Oct/Nov 2025