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CAIE A-Level Chemistry 9.1.1 Period 3 Physical Property Trends

Practise describing periodic variation in atomic radius, ionic radius, melting point and electrical conductivity.

Syllabus
2028–2030
Course
Chemistry 9701
Level
AS

Exam points

  • use a table or graph to describe the decrease in atomic radius across Period 3 and identify anomalies
  • separate cation and anion ionic-radius trends and explain the large jump between the two series
  • connect melting point and conductivity changes to metallic, giant covalent or molecular structure

9.1.1—Period 3 physical property trends question 1

[Maximum number: 2]

Use the axes to sketch a graph that shows the trend in melting points of the elements with atomic numbers 11 to 17.

Figure for Question 9.1.1—Period 3 physical property trends question 1 — CAIE A-Level Chemistry AS
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