4.1.1.7 Electronic structure Quiz: AQA Chemistry, Unit 1

The 20 questions

1. Where do electrons in an atom go first when filling up?

   • Lowest energy levels
   • Nucleus centre
   • Highest energy levels
   • Outer shells

2. The electronic structure of sodium is written as:

   • 2,1,8
   • 8,2,1
   • 2,8,1
   • 2,8,2

3. How many electrons does the second shell hold in the sodium structure 2,8,1?

   • 8
   • 1
   • 18
   • 2

4. How can the electronic structure of an atom be represented?

   • Word equations
   • Mass numbers
   • Isotope symbols
   • Numbers or diagrams

5. What two terms are used interchangeably for electron orbits?

   • Protons and neutrons
   • Energy levels or shells
   • Groups and periods
   • Nucleus and orbits

6. Which electronic structure is correct for chlorine with 17 electrons?

   • 8,8,1
   • 2,7,8
   • 2,8,7
   • 2,8,8

7. Which electronic structure is correct for magnesium with 12 electrons?

   • 2,8,2
   • 2,2,8
   • 2,8,3
   • 2,8,1

8. How many electrons are in the outer shell of neon?

   • 2
   • 1
   • 10
   • 8

9. Which element has the electronic structure 2,8,8,1?

   • Calcium
   • Sodium
   • Argon
   • Potassium

10. An atom has electronic structure 2,8,3. How many protons does it have?

    • 13
    • 3
    • 11
    • 5

11. An ion has electronic structure 2,8. Which charge might it have if it came from a neutral atom of sodium?

    • +2
    • 0
    • -1
    • +1

12. Why do electrons fill the innermost shells of an atom first?

    • Lowest energy available
    • Highest stability
    • Strongest magnetism
    • Largest volume

13. Which electronic structure has a full outer shell with two electrons?

    • Beryllium, 2,2
    • Lithium, 2,1
    • Helium, 2
    • Hydrogen, 1

14. Which atom's electronic structure is 2,1?

    • Carbon
    • Helium
    • Lithium
    • Boron

15. Which atom has electronic structure 2,8,4?

    • Carbon
    • Sulfur
    • Silicon
    • Phosphorus

16. How do inner electron shells compare in energy to outer shells?

    • Higher in energy
    • Fluctuating in energy
    • Lower in energy
    • Equal in energy

17. Which of these atoms has three shells of electrons?

    • Boron
    • Lithium
    • Helium
    • Sodium

18. Carbon has electronic structure 2,4. What is the electron count and proton count of a neutral carbon atom?

    • 6 electrons and 4 protons
    • 6 electrons and 6 protons
    • 8 electrons and 8 protons
    • 4 electrons and 6 protons

19. What visual method is used to show electrons in each shell?

    • Venn diagram
    • Pie chart
    • Dot and cross
    • Bar chart

20. Argon has atomic number 18. What is its electronic structure?

    • 2,8,8
    • 2,8,9
    • 2,8,7
    • 2,8,6

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