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Edexcel A-Level Chemistry AS 3.7 Reasons for the Trends in Ionic Radii Down a Group in the Periodic Table and for a Set of Isoelectronic Ions Questions

Practise ordering isoelectronic ions, explaining group trends through occupied shells and nuclear charge, and estimating ionic radii from data using Edexcel IAL Chemistry evidence.

Syllabus
First assessment 2019
Course
Chemistry YCH11
Level
AS

Exam points

  • Order isoelectronic ions by increasing proton number and decreasing ionic radius.
  • Explain larger radii down a group through additional occupied electron shells.
  • Estimate an ionic radius from a table or straight line of best fit with units.

Edexcel A-Level Chemistry AS 3.7 Reasons for the Trends in Ionic Radii Down a Group in the Periodic Table and for a Set of Isoelectronic Ions Questions question 1

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Table for Question Edexcel A-Level Chemistry AS 3.7 Reasons for the Trends in Ionic Radii Down a Group in the Periodic Table and for a Set of Isoelectronic Ions Questions question 1 — Edexcel A-Level Chemistry AS

Explain the trend in the ionic radii from the nitride ion to the aluminium ion.

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