Lesson 13A.1

13A.1 Lattice energy and Born-Haber cycles Quiz: Pearson Edexcel Chemistry, Unit 13

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson 13A.1, Lattice energy and Born-Haber cycles: 20 multiple choice questions for the Pearson Edexcel Chemistry (9CH0), Unit 13: Energetics II, written with Revision Ninja.

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The 20 questions

  1. Which enthalpy change forms one mole of an ionic solid from gaseous ions?

    • Enthalpy of atomisation
    • Lattice energy
    • Ionisation energy
    • Electron affinity

  2. What is the sign of the lattice formation energy for ionic compounds?

    • Variable
    • Positive
    • Negative
    • Zero

  3. Which enthalpy change forms one mole of gaseous atoms from an element?

    • Lattice energy
    • Enthalpy of atomisation
    • Ionisation energy
    • Enthalpy of formation

  4. What process occurs during the first electron affinity of an atom?

    • Losing one electron
    • Gaining two electrons
    • Sharing electrons
    • Gaining one electron

  5. Which enthalpy change forms one mole of a compound from its elements?

    • Lattice energy
    • Enthalpy of atomisation
    • Enthalpy of formation
    • Enthalpy of combustion

  6. What does a more exothermic lattice energy indicate about an ionic compound?

    • Stronger ionic bonding
    • Lower melting point
    • Higher solubility
    • Weaker ionic bonding

  7. Which law allows an unknown enthalpy change to be calculated using a Born-Haber cycle?

    • Hess's law
    • Henry's law
    • Avogadro's law
    • Raoult's law

  8. Using dHf(NaCl) = -411, atomisation of Na = +107, first ionisation energy of Na = +496, half the bond energy of Cl2 = +121 and electron affinity of Cl = -349 (all in kJ mol-1), what is the lattice energy of NaCl?

    • +786 kJ mol-1
    • -786 kJ mol-1
    • -375 kJ mol-1
    • -411 kJ mol-1

  9. Which ionic properties give magnesium oxide a much more exothermic lattice energy than sodium chloride?

    • Higher charges, smaller radii
    • Higher charges, larger radii
    • Lower charges, larger radii
    • Equal charges, larger radii

  10. A Born-Haber cycle for an ionic compound has dHf = -600, atomisation of metal = +150, ionisation energy = +700, half bond energy = +100 and electron affinity = -50 (all kJ mol-1). What is the lattice energy?

    • -300 kJ mol-1
    • -900 kJ mol-1
    • -1500 kJ mol-1
    • +1500 kJ mol-1

  11. What factor makes oxide formation energetically favourable overall in magnesium oxide?

    • Large lattice energy
    • Low ionisation energy
    • Weak covalent bonds
    • Zero electron affinity

  12. How many chlorine electron affinity terms appear in the Born-Haber cycle for magnesium chloride?

    • Two terms
    • One term
    • Three terms
    • Four terms

  13. Which of these ionic compounds has the largest magnitude of lattice energy?

    • LiF
    • NaCl
    • MgO
    • KBr

  14. Which combination of ionic properties results in a more exothermic lattice energy?

    • Higher charge, larger radius
    • Lower charge, larger radius
    • Lower charge, smaller radius
    • Higher charge, smaller radius

  15. A Born-Haber cycle for CaO has dHf = -635, atomisation of Ca = +178, IE1 + IE2 of Ca = +1735, atomisation of O = +249, EA1 of O = -141 and EA2 of O = +798 (kJ mol-1). What is the lattice energy of CaO?

    • +3454 kJ mol-1
    • -2184 kJ mol-1
    • -635 kJ mol-1
    • -3454 kJ mol-1

  16. What does an experimental lattice energy that is more exothermic than the theoretical value indicate?

    • Metallic bonding
    • Delocalised bonding
    • Pure ionic bonding
    • Covalent character

  17. Using dHf(KCl) = -437, atomisation of K = +89, IE of K = +419, half bond energy of Cl2 = +121 and lattice energy of KCl = -701 (kJ mol-1), what is the electron affinity of chlorine?

    • +365 kJ mol-1
    • -1046 kJ mol-1
    • -365 kJ mol-1
    • -701 kJ mol-1

  18. For MgCl2, dHf = -641, atomisation of Mg = +148, IE1 + IE2 of Mg = +2189, bond energy of Cl2 = +242 (for two atoms, 2 x 121), and 2 x electron affinity of Cl = -698 (all kJ mol-1). What is the lattice energy?

    • -2522 kJ mol-1
    • +2522 kJ mol-1
    • -1881 kJ mol-1
    • -641 kJ mol-1

  19. Which lithium halide has the most exothermic lattice energy?

    • Lithium bromide
    • Lithium chloride
    • Lithium iodide
    • Lithium fluoride

  20. Besides lattice energy, which enthalpy change directly determines the enthalpy of solution for an ionic compound?

    • Enthalpy of combustion
    • Enthalpy of hydration
    • Enthalpy of atomisation
    • Ionisation energy

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