Atomic structure and the Periodic Table — Paper 2 · IGCSE Sciences - Co-ordinated (9-1) 0973

15 Why do isotopes of the same element have the same chemical properties? A They have a different number of protons and a different number of outer shell electrons. B They have a different number of protons and the same number of outer shell electrons. C They have the same number of protons and a different number of outer shell electrons. D They have the same number of protons and the same number of outer shell electrons.

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Answer: D

This question in 0973/21 May/June 2019

21 Which statement about elements in the Periodic Table is correct? A Elements are arranged in mass number order. B The group number of an element is the same as the number of outer shell electrons. C The reactivity of elements in both Group I and Group VII increases down the group. D There is a change from non-metallic to metallic character from left to right across each period.

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Answer: B

This question in 0973/21 May/June 2019

40 The diagrams represent the nuclei of four different atoms V, W, X and Y. V W X Y key n p n p proton p p n n n n p p p p n p p p n n neutron p n n n Which two diagrams represent isotopes of the same element? A V and Y B W and X C X and Y D Y and W

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Answer: C

This question in 0973/22 May/June 2020

21 Which electronic structure is for a non-metallic element? A 2 B 2,2 C 2,8,2 D 2,8,8,2

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Answer: A

This question in 0973/21 Oct/Nov 2020

39 An atom of beryllium is represented by Be. 9 4 How many neutrons are in the nucleus of this type of beryllium atom? A 4 B 5 C 9 D 13

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Answer: B

This question in 0973/21 May/June 2022

39 An atom of beryllium is represented by Be. 9 4 How many neutrons are in the nucleus of this type of beryllium atom? A 4 B 5 C 9 D 13

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Answer: B

This question in 0973/22 May/June 2022

15 An atom of fluorine is represented by 19 9F. How many electrons does this atom contain? A 9 B 10 C 19 D 28

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Answer: A

This question in 0973/21 Oct/Nov 2022

16 Which row describes an atom that has the nucleon number 24? number of number of number of protons neutrons electrons A 8 8 8 B 12 12 12 C 21 24 21 D 24 28 24

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Answer: B

This question in 0973/21 May/June 2023

16 An atom of osmium is represented by 190 76Os. How many neutrons are in this atom? A 76 B 114 C 190 D 266

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Answer: B

This question in 0973/22 May/June 2023

16 The nucleon number of a hydrogen atom is 1. What is present inside the nucleus of this atom? A one proton and one electron B one proton and one neutron C one proton only D one neutron only

1 marks

Answer: C

This question in 0973/21 Oct/Nov 2023

22 Which electronic structure belongs to a non-metallic element? A 2 B 2,2 C 2,8,2 D 2,8,8,2

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Answer: A

This question in 0973/21 Oct/Nov 2024

16 The electronic configurations of four particles are shown. 1 2 3 4 Which diagrams represent the electronic configurations of a Group VI atom and its ion? A 1 and 2 B 1 and 4 C 2 and 3 D 3 and 4

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Answer: B

This question in 0973/21 May/June 2025

17 An aluminium atom forms an aluminium ion, Al 3+. Which statement describes what happens to the aluminium atom? A It gains 3 electrons. B It gains 3 protons. C It loses 3 electrons. D It loses 3 protons.

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Answer: C

This question in 0973/21 May/June 2025

14 Which particle has the same number of electrons in its outer shell as an atom of sodium, 23 Na? 11 A 23 11Na + B 23 11Na  C 24 11Na D 24 12Na 2+

1 marks

Answer: C

This question in 0973/21 Oct/Nov 2025