Questions as text
Q1 · Which row compares the number of protons and the number of neutrons in atoms of different… 0654/21 May/June 2017
40 Which row compares the number of protons and the number of neutrons in atoms of different isotopes of an element? number of number of protons neutrons A different different B different the same C the same different D the same the same
1 marks
Answer: C
This question in 0654/21 May/June 2017
Q2 · Which row compares the number of protons and the number of neutrons in atoms of different… 0654/22 May/June 2017
40 Which row compares the number of protons and the number of neutrons in atoms of different isotopes of an element? number of number of protons neutrons A different different B different the same C the same different D the same the same
1 marks
Answer: C
This question in 0654/22 May/June 2017
Q3 · Which row compares the number of protons and the number of neutrons in atoms of different… 0654/23 May/June 2017
40 Which row compares the number of protons and the number of neutrons in atoms of different isotopes of an element? number of number of protons neutrons A different different B different the same C the same different D the same the same
1 marks
Answer: C
This question in 0654/23 May/June 2017
Q4 · The diagrams represent pairs of nuclei of some atoms 0654/21 Oct/Nov 2017
40 The diagrams represent pairs of nuclei of some atoms. Which pair shows nuclei of different isotopes of the same element? A B key neutron proton C D
1 marks
Answer: B
This question in 0654/21 Oct/Nov 2017
Q5 · The diagrams represent pairs of nuclei of some atoms 0654/22 Oct/Nov 2017
40 The diagrams represent pairs of nuclei of some atoms. Which pair shows nuclei of different isotopes of the same element? A B key neutron proton C D
1 marks
Answer: B
This question in 0654/22 Oct/Nov 2017
Q6 · The diagrams represent pairs of nuclei of some atoms 0654/23 Oct/Nov 2017
40 The diagrams represent pairs of nuclei of some atoms. Which pair shows nuclei of different isotopes of the same element? A B key neutron proton C D
1 marks
Answer: B
This question in 0654/23 Oct/Nov 2017
Q7 · Why do isotopes of the same element have the same chemical properties? 0654/21 May/June 2019
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.
1 marks
Answer: D
This question in 0654/21 May/June 2019
Q8 · There are three different isotopes of hydrogen 0654/21 May/June 2019
40 There are three different isotopes of hydrogen. 1 H H 2 H 3 1 1 1 Which statement about the nuclei of these three isotopes is correct? A They have different numbers of electrons. B They have the same number of nucleons. C They have the same number of neutrons. D They have the same number of protons.
1 marks
Answer: D
This question in 0654/21 May/June 2019
Q9 · The diagrams represent the nuclei of four different atoms V, W, X and Y 0654/21 May/June 2020
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
1 marks
Answer: C
This question in 0654/21 May/June 2020
Q10 · The diagrams represent the nuclei of four different atoms V, W, X and Y 0654/22 May/June 2020
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
1 marks
Answer: C
This question in 0654/22 May/June 2020
Q11 · The diagrams represent the nuclei of four different atoms V, W, X and Y 0654/23 May/June 2020
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
1 marks
Answer: C
This question in 0654/23 May/June 2020
Q12 · The electronic structures of four isotopes are shown 0654/22 Feb/March 2021
15 The electronic structures of four isotopes are shown. 1 2 3 4 key proton neutron electron Which isotopes have the same chemical properties? A 1 and 3 B 1 and 4 C 2 and 3 D 2 and 4
1 marks
Answer: A
This question in 0654/22 Feb/March 2021
Q13 · The diagrams represent pairs of nuclei of some atoms 0654/21 Oct/Nov 2022
40 The diagrams represent pairs of nuclei of some atoms. Which pair shows nuclei of different isotopes of the same element? A B key neutron proton C D
1 marks
Answer: B
This question in 0654/21 Oct/Nov 2022
Q14 · The diagrams represent pairs of nuclei of some atoms 0654/22 Oct/Nov 2022
40 The diagrams represent pairs of nuclei of some atoms. Which pair shows nuclei of different isotopes of the same element? A B key neutron proton C D
1 marks
Answer: B
This question in 0654/22 Oct/Nov 2022
Q15 · How many neutrons are in one atom of the isotope 35 17C ? 0654/23 Oct/Nov 2022
15 How many neutrons are in one atom of the isotope 35 17C ? l A 17 B 18 C 35 D 52
1 marks
Answer: B
This question in 0654/23 Oct/Nov 2022
Q16 · The diagrams represent pairs of nuclei of some atoms 0654/23 Oct/Nov 2022
40 The diagrams represent pairs of nuclei of some atoms. Which pair shows nuclei of different isotopes of the same element? A B key neutron proton C D
1 marks
Answer: B
This question in 0654/23 Oct/Nov 2022
Q17 · An atom of osmium is represented by 190 76Os 0654/22 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
1 marks
Answer: B
This question in 0654/22 May/June 2023
Q18 · Which statement about isotopes of the same element is correct? 0654/22 Oct/Nov 2023
15 Which statement about isotopes of the same element is correct? A They have the same number of protons but different number of electrons. B They have the same number of protons but different number of neutrons. C They have the same number of neutrons but different number of electrons. D They have the same number of neutrons but different number of protons.
1 marks
Answer: B
This question in 0654/22 Oct/Nov 2023
Q19 · X and Y are isotopes of the same element 0654/23 Oct/Nov 2023
16 X and Y are isotopes of the same element. Which statement about X and Y is correct? A They have the same nucleon number but different numbers of protons. B They have the same number of neutrons but different numbers of electrons. C They have the same atomic number but different numbers of electrons. D They have the same number of protons but different numbers of neutrons.
1 marks
Answer: D
This question in 0654/23 Oct/Nov 2023
Q20 · One isotope of oxygen is represented by 16 O 0654/23 May/June 2024
15 One isotope of oxygen is represented by 16 O. 8 Which diagram represents a different isotope of oxygen? A B 9p 9p 9n 8n C D 8p 8p 8n 9n
1 marks
Answer: D
This question in 0654/23 May/June 2024
Q21 · The numbers of protons, neutrons and electrons in four particles are shown 0654/23 Oct/Nov 2024
14 The numbers of protons, neutrons and electrons in four particles are shown. number of number of number of particle protons neutrons electrons W 20 20 20 X 19 20 19 Y 20 22 18 Z 21 24 21 Which two particles are isotopes of the same element? A W and X B W and Y C X and Y D Y and Z
1 marks
Answer: B
This question in 0654/23 Oct/Nov 2024
Q22 · The symbols representing four different particles are shown 0654/22 Feb/March 2025
15 The symbols representing four different particles are shown. 1 P 1Q R 2 – 2 3 1S + 1 1 Which particles have the same chemical properties? A 1 P and R 2 only 1 1 B 1Q and 2 – 3 1S only + C 1Q and R 2 – 2 only 1 D 1 P , 1Q , R 2 – 2 and 3 1S + 1 1
1 marks
Answer: A
This question in 0654/22 Feb/March 2025
Q23 · Which statement explains why isotopes of the same element have the same properties? 0654/23 May/June 2025
15 Which statement explains why isotopes of the same element have the same properties? A They have equal numbers of protons and electrons. B They have the same number of electrons in their outer shell. C They have the same number of protons. D They have the same number of electron shells.
1 marks
Answer: B
This question in 0654/23 May/June 2025
Q24 · Which statement explains why isotopes of an element have the same chemical properties? 0654/22 Oct/Nov 2025
15 Which statement explains why isotopes of an element have the same chemical properties? A They have the same atomic mass. B They have the same number of neutrons. C They have the same electronic configuration. D They have the same density.
1 marks
Answer: C
This question in 0654/22 Oct/Nov 2025
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