Structure of an atom

Last updated: 29/10/2021

AQA A-Level Chemistry Atomic structure Structure of an atom

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Question 1 of 50

1. Question
What is an isotope?
- An atom from an element that has the same number of protons and electrons, but a different mass and number of neutrons
- An atom from an element that has the same number of protons and neutrons but a different number of electrons
- An atom from an element that has the same number of protons and neutrons but a different electronic configuration
- An atom from an element that has the same mass and number of neutrons, but a different number of protons and electrons
Question 2 of 50

2. Question
Why do both isotopes carbon-12 and carbon-13 react the same?
- They have the same electronic structure
- They have the same number of protons and neutrons
- They are in the same group
- They are the same element
Question 3 of 50

3. Question
How many protons, neutrons and electrons are in $^{12}C_6$ ?
- Protons – 6 Neutrons – 6 Electrons – 6
- Protons – 9 Neutrons – 8 Electrons – 6
- Protons – 7 Neutrons – 6 Electrons – 7
- Protons – 6 Neutrons – 12 Electrons – 6
Question 4 of 50

4. Question
How many protons, neutrons and electrons are in $^{223}C_{87}$ ?
- Protons – 87 Neutrons – 136 Electrons – 87
- Protons – 87 Neutrons – 137 Electrons – 88
- Protons – 137 Neutrons – 137 Electrons – 87
- Protons – 136 Neutrons – 87 Electrons – 136
Question 5 of 50

5. Question
How many protons, neutrons and electrons are in $^{19}F_9$ ?
- Protons – 9 Neutrons – 10 Electrons – 9
- Protons – 10 Neutrons – 9 Electrons – 10
- Protons – 9 Neutrons – 10 Electrons – 10
- Protons – 9 Neutrons – 9 Electrons – 9
Question 6 of 50

6. Question
How many protons, neutrons and electrons are in $^{23}Na^{+}_9$ ?
- Protons – 9 Neutrons – 14 Electrons – 8
- Protons – 9 Neutrons – 14 Electrons – 10
- Protons – 14 Neutrons – 9 Electrons – 8
- Protons – 14 Neutrons – 9 Electrons – 9
Question 7 of 50

7. Question
How many protons, neutrons and electrons are in $^{35}Cl^{-}_{17}$ ?
- Protons – 17 Neutrons – 18 Electrons – 18
- Protons – 17 Neutrons – 18 Electrons – 19
- Protons – 17 Neutrons – 18 Electrons – 17
- Protons – 16 Neutrons – 18 Electrons – 16
Question 8 of 50

8. Question
How many protons, neutrons and electrons are in $^{24}Mg^{2+}_{12}$ ?
- Protons – 12 Neutrons – 12 Electrons – 10
- Protons – 12 Neutrons – 12 Electrons – 11
- Protons – 12 Neutrons – 12 Electrons – 12
- Protons – 12 Neutrons – 12 Electrons – 14
Question 9 of 50

9. Question
How many protons, neutrons and electrons are in $^{16}O^{2-}_8$ ?
- Protons – 8 Neutrons – 8 Electrons – 10
- Protons – 8 Neutrons – 8 Electrons – 6
- Protons – 8 Neutrons – 8 Electrons – 8
- Protons – 7 Neutrons – 8 Electrons – 7
Question 10 of 50

10. Question
How many protons, neutrons and electrons are in $^7Li_3?$
- Protons – 3 Neutrons – 4 Electrons – 3
- Protons – 4 Neutrons – 3 Electrons – 4
- Protons – 7 Neutrons – 3 Electrons – 7
- Protons – 4 Neutrons – 4 Electrons – 4
Question 11 of 50

11. Question
How many protons, neutrons and electrons are in $^{16}O_8$ ?
- Protons – 8 Neutrons – 8 Electrons – 8
- Protons – 8 Neutrons – 10 Electrons – 8
- Protons – 16 Neutrons – 8 Electrons – 16
- Protons – 6 Neutrons – 8 Electrons – 6
Question 12 of 50

12. Question
Write the symbol of the ion with 9 protons, 10 neutrons and 10 electrons.
- F $^-$
- F $^+$
- Cl $^{2-}$
- Br $^-$
Question 13 of 50

13. Question
Write the symbol of the ion with 35 protons, 45 neutrons and 36 electrons.
- Br $^-$
- Br $^+$
- I $^-$
- Se $^{2-}$
Question 14 of 50

14. Question
Write the symbol of the ion with 20 protons, 20 neutrons and 18 electrons.
- Ca $^{2+}$
- K $^+$
- Ca $^{2-}$
- Mg $^{2+}$
Question 15 of 50

15. Question
Write the symbol of the ion with 13 protons, 14 neutrons and 10 electrons.
- Al $^{3+}$
- B $^{3+}$
- B $^{3-}$
- B $^{2+}$
Question 16 of 50

16. Question
Write the symbol of the ion with 53 protons, 74 neutrons and 54 electrons.
- Br $^{2-}$
- F $^-$
- I $^-$
- I $^{2-}$
Question 17 of 50

17. Question
Write the symbol of the atom with 24 protons, 28 neutrons and 24 electrons.
- Cr
- Li
- Xe
- Mg
Question 18 of 50

18. Question
Write the symbol of the atom with 4 protons, 5 neutrons and 4 electrons.
- Be
- F
- Ne
- Al
Question 19 of 50

19. Question
Write the symbol of the atom with 15 protons, 16 neutrons and 15 electrons.
- P
- O
- Ga
- N
Question 20 of 50

20. Question
Write the symbol of the atom with 13 protons, 14 neutrons and 13 electrons.
- Al
- Si
- Co
- B
Question 21 of 50

21. Question
Write the symbol of the atom with 21 protons, 24 neutrons and 21 electrons.
- Sc
- Ar
- B
- Cl
Question 22 of 50

22. Question
Write the symbol of the ion with 20 protons, 20 neutrons and 18 electrons.
- Ca $^{2+}$
- Be $^{2+}$
- Ba $^{2-}$
- O $^-$
Question 23 of 50

23. Question
Write the symbol of the atom with 34 protons, 45 neutrons and 34 electrons.
- Se
- B
- Ar
- Cl
Question 24 of 50

24. Question
Write the symbol of the ion with 19 protons, 20 neutrons and 18 electrons.
- K $^+$
- Na $^+$
- Al $^{3+}$
- Mg $^{2+}$
Question 25 of 50

25. Question
Write the symbol of the ion with 8 protons, 8 neutrons and 10 electrons.
- O $^{2-}$
- S $^{2-}$
- O $^{2+}$
- F $^-$
Question 26 of 50

26. Question
What is the definition of an atom?
- Small particles that are the make up of everything
- Materials that are made up of tiny particles
- A compound that is made of the same type of particles
- Particles floating around space
Question 27 of 50

27. Question
What is in the centre of an atom?
- Nucleus
- Shells
- Electrons
- Empty space
Question 28 of 50

28. Question
Which subatomic particle does the nucleus contain?
- Protons
- Ions
- Electrons
- Shells
Question 29 of 50

29. Question
Which subatomic particle does the nucleus contain?
- Neutrons
- Ions
- Electrons
- Shells
Question 30 of 50

30. Question
Which subatomic particle does the nucleus not contain?
- Electrons
- Neutrons
- Protons
- Sub atomic particles
Question 31 of 50

31. Question
Which sub atomic particle orbits the nucleus within an atom?
- Electrons
- Neutrons
- Protons
- Ions
Question 32 of 50

32. Question
What type of charge does a proton have?
- Positive
- Negative
- Neutral
- No charge
Question 33 of 50

33. Question
What type of charge does a neutron have?
- Neutral
- Positive
- Negative
- Explosive
Question 34 of 50

34. Question
What type of charge does an electron have?
- Negative
- Positive
- Neutral
- No charge
Question 35 of 50

35. Question
What is the charge on a proton?
- +1
- -1
- 0
- -2
Question 36 of 50

36. Question
What is the charge on a neutron?
- 0
- -1
- +1
- -2
Question 37 of 50

37. Question
What is the charge on an electron?
- -1
- 0
- +1
- -2
Question 38 of 50

38. Question
What is the relative mass of a proton?
- 1
- 1/200
- 0
- 5
Question 39 of 50

39. Question
What is the relative mass of a neutron?
- 1
- 1/200
- 0
- 5
Question 40 of 50

40. Question
What is the relative mass of an electron?
- 1/200
- 1
- 0
- 5
Question 41 of 50

41. Question
What is the overall charge of the nucleus?
- Positive
- Negative
- Neutral
- No charge
Question 42 of 50

42. Question
Which two subatomic particles have the same mass?
- Protons and neutrons
- Protons and electrons
- Neutrons and electrons
- Electrons and ions
Question 43 of 50

43. Question
Within an atom, which two subatomic particles are always equal numbers?
- Protons and electrons
- Protons and neutrons
- Neutrons and electrons
- Electrons and ions
Question 44 of 50

44. Question
What do electrons orbit?
- Nucleus
- Shells
- Atom
- Nothing
Question 45 of 50

45. Question
What is the overall charge of an atom?
- No charge
- Positive
- Negative
- Explosive
Question 46 of 50

46. Question
What do electrons occupy?
- Shells
- Nucleus
- Protons
- Neutrons
Question 47 of 50

47. Question
How many electrons are held on the first shell within an atom?
- 2
- 8
- 4
- 6
Question 48 of 50

48. Question
How many electrons are held on the second shell within an atom?
- 8
- 2
- 4
- 6
Question 49 of 50

49. Question
How many electrons are held on the third shell within an atom?
- 8
- 2
- 4
- 6
Question 50 of 50

50. Question
How many electrons are held on the fourth shell within an atom?
- 8
- 2
- 4
- 6