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CAIE A-Level Chemistry AS 1.4.4 The Variation in Successive Ionisation Questions

Practise interpreting successive ionisation-energy data and explaining large jumps using electron shells, subshells, shielding and nuclear attraction.

Syllabus
2028–2030
Course
Chemistry 9701
Level
AS

Exam points

  • Identify and explain the variation in successive ionisation energies of an element, including large jumps when a new shell is removed.

CAIE A-Level Chemistry AS 1.4.4 The Variation in Successive Ionisation Questions question 1

[Maximum number: 1]

Which process has the largest enthalpy change per mole?

A

All3+(g)→All4+(g)+e−\mathrm{Al} l^{3+}(\mathrm{g}) \rightarrow \mathrm{Al} l^{4+}(\mathrm{g})+\mathrm{e}^{-}

B

P5+(g)→P6+(g)+e−\mathrm{P}^{5+}(\mathrm{g}) \rightarrow \mathrm{P}^{6+}(\mathrm{g})+\mathrm{e}^{-}

C

S6+(g)→S7+(g)+e−\mathrm{S}^{6+}(\mathrm{g}) \rightarrow \mathrm{S}^{7+}(\mathrm{g})+\mathrm{e}^{-}

D

Si4+(g)→Si5+(g)+e−\mathrm{Si}^{4+}(\mathrm{g}) \rightarrow \mathrm{Si}^{5+}(\mathrm{g})+\mathrm{e}^{-}

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