Atomic structure and the Periodic Table — Paper 1 · IGCSE Chemistry (9-1) 0971

4 In which atom is the number of protons equal to the number of neutrons? A 40Ar B 19F C 23Na D 16O

1 marks

Answer: D

This question in 0971/11 May/June 2018

5 Which statement about an atom of fluorine, 19 9 , is correct? F A It contains more protons than neutrons. B It contains a total of 28 protons, neutrons and electrons. C Its isotopes contain different numbers of protons. D Its nucleus contains 9 neutrons.

1 marks

Answer: B

This question in 0971/11 May/June 2019

6 An isotope of lithium has the symbol Li 7 . 3 What is the arrangement of electrons in one atom of this isotope of lithium? A B C D

1 marks

Answer: A

This question in 0971/12 Oct/Nov 2019

4 The atomic number and nucleon number of a potassium atom are shown. potassium atom atomic number 19 nucleon number 39 How many protons, neutrons and electrons are in a potassium ion, K+? protons neutrons electrons A 19 20 18 B 19 20 20 C 20 19 18 D 20 19 19

1 marks

Answer: A

This question in 0971/11 May/June 2020

4 The diagram shows the electronic structure of a particle with a nucleon number (mass number) of 40. e e e e e e e e e e e 40 e e e e e e e The table shows the suggestions that three students, 1, 2 and 3, made to identify the particle. student 1 2 3 particle Ar Cl Ca2+ Which students are correct? A 1 and 2 only B 1 and 3 only C 2 and 3 only D 1, 2 and 3

1 marks

Answer: B

This question in 0971/12 May/June 2020

6 Which statement about atomic structure is correct? A Isotopes have a different nucleon number but the same proton number. B Metal atoms gain electrons to achieve a noble gas electronic structure. C The nucleon number is the total number of electrons and neutrons in the nucleus of the atom. D Protons and neutrons are oppositely charged particles.

1 marks

Answer: A

This question in 0971/12 Oct/Nov 2020

4 Element X has 7 protons. Element Y has 8 more protons than X. Which statement about element Y is correct? A Y has more electron shells than X. B Y has more electrons in its outer shell than X. C Y is in a different group of the Periodic Table from X. D Y is in the same period of the Periodic Table as X.

1 marks

Answer: A

This question in 0971/11 May/June 2021

4 How many protons, neutrons and electrons are there in one atom of the isotope 27 13Al ? protons neutrons electrons A 13 13 13 B 13 14 13 C 14 13 13 D 14 14 13

1 marks

Answer: B

This question in 0971/12 Oct/Nov 2021

6 Information about the structures of three atoms, X, Y and Z, is shown. proton nucleon atom number number X 1 1 Y 1 2 Z 1 3 Which statements about atoms X, Y and Z are correct? 1 They are isotopes of the same element. 2 They contain the same number of electrons. 3 They contain the same number of neutrons. 4 They contain one occupied electron shell. A 1, 2 and 4 B 1 and 2 only C 3 and 4 D 3 only

1 marks

Answer: A

This question in 0971/11 May/June 2022

3 What are the relative charge and relative mass of an electron? relative relative charge mass A 0 1 1 B 0 2000 C –1 1 1 D –1 2000

1 marks

Answer: D

This question in 0971/11 May/June 2023

3 An atom of element X contains: ● 5 protons ● 6 neutrons ● 5 electrons. Which statements about element X are correct? 1 X has an atomic number of 6. 2 X has a nucleon number of 11. 3 X is in Group II of the Periodic Table. 4 X is in the second period of the Periodic Table. A 1 and 3 B 1 and 4 C 2 and 3 D 2 and 4

1 marks

Answer: D

This question in 0971/12 May/June 2023

3 A representation of an atom is shown. – + + – – + + – – + + – What is the nucleon number of this atom? A 6 B 7 C 12 D 13

1 marks

Answer: D

This question in 0971/12 Oct/Nov 2023

3 The diagram shows some properties of particles in an atom. To which labelled part of the diagram do electrons belong? found outside nucleus A C B relative mass relative D less than 1 charge of 1–

1 marks

Answer: B

This question in 0971/11 May/June 2024

5 Which row shows the number of protons, neutrons and electrons in the ion ? protons neutrons electrons A 10 8 8 B 8 10 8 C 10 8 10 D 8 10 10

1 marks

Answer: D

This question in 0971/12 May/June 2024

5 Which information about an element is given by its atomic number? A the number of protons in the nucleus of an atom of an element B the number of particles in the nucleus of an atom of an element C the relative mass of one atom of an element D the total number of particles in one atom of an element

1 marks

Answer: A

This question in 0971/12 Oct/Nov 2024

3 An atom of element Q contains 19 electrons, 19 protons and 20 neutrons. What is Q? A calcium B potassium C strontium D yttrium

1 marks

Answer: B

This question in 0971/11 May/June 2025

4 Which part of an atom has a relative mass of 1 and a relative charge of 0? A electron B neutron C nucleus D proton

1 marks

Answer: B

This question in 0971/11 May/June 2025

5 Which statement defines the atomic number of an element? A the group number of the element B the mass of one atom of the element C the number of particles in the nucleus of one atom of the element D the number of protons in the nucleus of one atom of the element

1 marks

Answer: D

This question in 0971/12 May/June 2025

4 Which statement about the structure of an atom is correct? A Electrons and protons each have a relative mass of 1, and neutrons have no charge. B Electrons have a relative mass of 1 and a negative charge. C Protons have a relative mass of 1 and a negative charge. D Neutrons have a relative mass of 1 and no charge.

1 marks

Answer: D

This question in 0971/12 Oct/Nov 2025

5 The diagram shows the electronic configuration of a particle with a nucleon number of 40. 40 The table shows the suggestions that three students, 1, 2 and 3, made to identify the particle. student 1 2 3 particle Ar Cl Ca2+ Which students are correct? A 1, 2 and 3 B 1 and 2 only C 1 and 3 only D 2 and 3 only

1 marks

Answer: C

This question in 0971/12 Oct/Nov 2025