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Particles in the atom and atomic radius past paper questions

Chemistry 9701 · Atomic structure. 1 understand that atoms are mostly empty space surrounding a very small, dense nucleus that contains protons and neutrons; electrons are found in shells in the empty space around the nucleus 2 identify and describe protons, neutrons and electrons in terms of their relative charges and relative masses 3 understand the terms atomic and proton number; mass and nucleon number 4 describe the distribution of mass and charge within an atom 5 describe the behaviour of beams of protons, neutrons and electrons moving at the same velocity in an electric field 6 determine the numbers of protons, neutrons and electrons present in both atoms and ions given atomic or proton number, mass or nucleon number and charge 7 state and explain qualitatively the variations in atomic radius and ionic radius across a period and down a group deduce the presence of bromine and chlorine atoms in a compound using the [M + 2]+ peak Cambridge International AS & A Level Chemistry 9701 syllabus for 2025, 2026 and 2027.  Subject content 39 www.cambridgeinternational.org/alevel Back to contents page A Level subject content Physical chemistry 23 Chemical energetics

In Cambridge A Level Chemistry 9701, Particles in the atom and atomic radius came up in 78 of the 139 papers on Paperstreak, for about 2 marks a paper when it does. It last came up in October/November 2025.

Often set with Electrons, energy levels and atomic orbitals, Ionisation energy, Mass spectrometry, Isotopes.

96 questions, newest first

  1. 9701/12/O/N/25 Question 17 · 1 mark
  2. 9701/21/O/N/25 Question 1 part (a(i)) · 1 mark
  3. 9701/21/O/N/25 Question 2 part (a(ii)) · 2 marks
  4. 9701/22/O/N/25 Question 1 part (a(i)) · 1 mark
  5. 9701/23/O/N/25 Question 1 part (a(i)) · 1 mark
  6. 9701/23/O/N/25 Question 2 parts (a(i)) (a(ii)) · 4 marks
  7. 9701/12/M/J/25 Question 2 · 1 mark
  8. 9701/12/M/J/25 Question 14 · 1 mark
  9. 9701/13/M/J/25 Question 23 · 1 mark
  10. 9701/21/M/J/25 Question 2 part (b(ii)) · 2 marks
  11. 9701/22/M/J/25 Question 2 parts (d) (e) · 4 marks
  12. 9701/23/M/J/25 Question 1 part (b(iii)) · 4 marks
  13. 9701/12/F/M/25 Question 4 · 1 mark
  14. 9701/22/F/M/25 Question 2 parts (b(i)) (c(i)) (c(ii)) (c(iii)) · 9 marks
  15. 9701/12/O/N/24 Question 1 · 1 mark
  16. 9701/12/O/N/24 Question 19 · 1 mark
  17. 9701/21/O/N/24 Question 1 part (b) · 3 marks
  18. 9701/22/O/N/24 Question 1 part (b(i)) · 2 marks
  19. 9701/23/O/N/24 Question 1 part (b) · 3 marks
  20. 9701/11/M/J/24 Question 4 · 1 mark
  21. 9701/13/M/J/24 Question 3 · 1 mark
  22. 9701/22/M/J/24 Question 1 parts (a) (b) · 5 marks
  23. 9701/12/F/M/24 Question 1 · 1 mark
  24. 9701/12/F/M/24 Question 18 · 1 mark
  25. 9701/11/O/N/23 Question 1 · 1 mark
  26. 9701/11/O/N/23 Question 17 · 1 mark
  27. 9701/12/O/N/23 Question 1 · 1 mark
  28. 9701/13/O/N/23 Question 1 · 1 mark
  29. 9701/21/O/N/23 Question 1 part (b(ii)) · 2 marks
  30. 9701/22/O/N/23 Question 1 part (a(i)) · 1 mark
  31. 9701/23/O/N/23 Question 1 part (b(ii)) · 2 marks
  32. 9701/11/M/J/23 Question 3 · 1 mark
  33. 9701/21/M/J/23 Question 1 part (a) · 3 marks
  34. 9701/12/F/M/23 Question 12 · 1 mark
  35. 9701/12/F/M/23 Question 22 · 1 mark
  36. 9701/11/O/N/22 Question 18 · 1 mark
  37. 9701/11/O/N/22 Question 23 · 1 mark
  38. 9701/12/O/N/22 Question 3 · 1 mark
  39. 9701/13/O/N/22 Question 18 · 1 mark
  40. 9701/13/O/N/22 Question 23 · 1 mark
  41. 9701/21/O/N/22 Question 1 part (a(i)) · 2 marks
  42. 9701/22/O/N/22 Question 1 part (b) · 3 marks
  43. 9701/23/O/N/22 Question 1 part (a(i)) · 2 marks
  44. 9701/11/M/J/22 Question 2 · 1 mark
  45. 9701/12/M/J/22 Question 18 · 1 mark
  46. 9701/13/M/J/22 Question 17 · 1 mark
  47. 9701/21/M/J/22 Question 1 part (d(i)) · 1 mark
  48. 9701/12/O/N/21 Question 3 · 1 mark
  49. 9701/22/O/N/21 Question 2 part (a(v)) · 2 marks
  50. 9701/12/M/J/21 Question 31 · 1 mark
  51. 9701/13/M/J/21 Question 3 · 1 mark
  52. 9701/11/O/N/20 Question 3 · 1 mark
  53. 9701/12/O/N/20 Question 31 · 1 mark
  54. 9701/13/O/N/20 Question 3 · 1 mark
  55. 9701/22/O/N/20 Question 1 parts (a(i)) (a(ii)) · 2 marks
  56. 9701/12/M/J/20 Question 34 · 1 mark
  57. 9701/13/M/J/20 Question 14 · 1 mark
  58. 9701/12/F/M/20 Question 1 · 1 mark
  59. 9701/11/O/N/19 Question 31 · 1 mark
  60. 9701/13/O/N/19 Question 31 · 1 mark
  61. 9701/11/M/J/19 Question 31 · 1 mark
  62. 9701/12/M/J/19 Question 32 · 1 mark
  63. 9701/13/M/J/19 Question 12 · 1 mark
  64. 9701/13/M/J/19 Question 31 · 1 mark
  65. 9701/23/M/J/19 Question 1 parts (a(i)) (a(ii)) · 2 marks
  66. 9701/12/O/N/18 Question 2 · 1 mark
  67. 9701/12/O/N/18 Question 3 · 1 mark
  68. 9701/22/O/N/18 Question 1 part (a) · 4 marks
  69. 9701/22/O/N/18 Question 4 part (e(iii)) · 1 mark
  70. 9701/12/M/J/18 Question 32 · 1 mark
  71. 9701/13/M/J/18 Question 2 · 1 mark
  72. 9701/21/M/J/18 Question 3 parts (a(i)) (a(ii)) (a(iii)) · 5 marks
  73. 9701/12/F/M/18 Question 3 · 1 mark
  74. 9701/12/O/N/17 Question 31 · 1 mark
  75. 9701/11/M/J/17 Question 31 · 1 mark
  76. 9701/12/M/J/17 Question 1 · 1 mark
  77. 9701/12/M/J/17 Question 12 · 1 mark
  78. 9701/13/M/J/17 Question 1 · 1 mark
  79. 9701/21/M/J/17 Question 3 part (a(v)) · 1 mark
  80. 9701/22/M/J/17 Question 1 part (a) · 2 marks
  81. 9701/22/F/M/17 Question 1 parts (a(ii)) (a(iii)) · 5 marks
  82. 9701/11/O/N/16 Question 4 · 1 mark
  83. 9701/11/O/N/16 Question 5 · 1 mark
  84. 9701/13/O/N/16 Question 4 · 1 mark
  85. 9701/13/O/N/16 Question 5 · 1 mark
  86. 9701/21/O/N/16 Question 3 parts (a(i)) (a(ii)) · 4 marks
  87. 9701/23/O/N/16 Question 3 parts (a(i)) (a(ii)) · 4 marks
  88. 9701/11/M/J/16 Question 4 · 1 mark
  89. 9701/11/M/J/16 Question 12 · 1 mark
  90. 9701/11/M/J/16 Question 31 · 1 mark
  91. 9701/12/M/J/16 Question 12 · 1 mark
  92. 9701/21/M/J/16 Question 1 parts (a) (b) · 7 marks
  93. 9701/22/M/J/16 Question 1 part (a) · 4 marks
  94. 9701/12/F/M/16 Question 3 · 1 mark
  95. 9701/12/F/M/16 Question 4 · 1 mark
  96. 9701/22/F/M/16 Question 1 part (a(i)) · 2 marks

More in Atomic structure: Isotopes, Electrons, energy levels and atomic orbitals, Ionisation energy.

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