Lesson 2A.1

2A.1 Ionic bonding and ionic radii Quiz: Pearson Edexcel Chemistry, Unit 2

20 questions

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Lesson 2A.1, Ionic bonding and ionic radii: 20 multiple choice questions for the Pearson Edexcel Chemistry (9CH0), Unit 2: Bonding and Structure, written with Revision Ninja.

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The 20 questions

  1. What holds oppositely charged ions together in an ionic lattice?

    • Electrostatic attraction
    • Delocalised electrons
    • Shared electrons
    • Hydrogen bonding
  2. Which ion of magnesium is formed when a Mg atom loses two electrons?

    • Mg2-
    • Mg2+
    • Mg-
    • Mg+
  3. Which combination creates the strongest ionic bonding?

    • Smaller ions, higher charges
    • Larger ions, lower charges
    • Larger ions, higher charges
    • Smaller ions, lower charges
  4. Which species is isoelectronic with Na+?

    • Ne
    • Cl
    • Ar
    • Mg
  5. What is the electron configuration of the O2- ion?

    • 1s2 2s2 2p4
    • 1s2 2s2 2p6 3s2
    • 1s2 2s2 2p2
    • 1s2 2s2 2p6
  6. Which observation confirms ions exist in molten sodium chloride?

    • Conducts electricity
    • It sublimes directly
    • Remains an insulator
    • Dissolves in hexane
  7. Which of N3-, O2-, F- and Na+ has the largest ionic radius?

    • F-
    • Na+
    • N3-
    • O2-
  8. Which ion has the smallest radius among Al3+, Mg2+, Na+ and F-?

    • Na+
    • Mg2+
    • Al3+
    • F-
  9. Which compound has the strongest ionic bonding?

    • MgO
    • NaF
    • NaCl
    • KCl
  10. Which electron configuration is correct for the Al3+ ion?

    • 1s2 2s2 2p4
    • 1s2 2s2 2p6
    • 1s2 2s2 2p6 3s2
    • 1s2 2s2 2p6 3s2 3p1
  11. Why do ionic radii increase down Group 1?

    • Increased proton count
    • Decreasing nuclear charge
    • Fewer inner electrons
    • Extra electron shell
  12. Between isoelectronic N3- and Al3+, which has the larger radius?

    • Al3+
    • N3-
    • Neither exists
    • Both are equal
  13. Sulfur atoms form ions with what charge in forming sulfide?

    • 2-
    • 2+
    • 4+
    • 6-
  14. What is the formula of the ionic compound formed from aluminium and oxygen?

    • Al2O
    • Al3O2
    • Al2O3
    • AlO
  15. What is the formula of magnesium nitride?

    • Mg3N2
    • Mg2N3
    • Mg3N
    • MgN
  16. Why is ionic bonding in MgO stronger than in NaCl?

    • More electron shells
    • Larger ionic radii
    • Fewer total electrons
    • Higher ionic charges
  17. An ion X2+ has 10 electrons. What is the formula of its fluoride?

    • MgF
    • MgF3
    • Mg2F
    • MgF2
  18. Among isoelectronic O2-, F-, Na+, and Mg2+, which has the largest radius?

    • O2-
    • Na+
    • F-
    • Mg2+
  19. Put these ionic radii in order of decreasing size: Na+, Mg2+, Al3+.

    • Al3+ > Mg2+ > Na+
    • Na+ > Mg2+ > Al3+
    • Mg2+ > Na+ > Al3+
    • Na+ = Mg2+ = Al3+
  20. Why do Group 2 oxides have higher melting temperatures than Group 1 oxides?

    • 2+ and 2- charges
    • 1+ and 2- charges
    • 2+ and 1- charges
    • 1+ and 1- charges

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