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Edexcel A-Level Chemistry AS 2.18 Explain I the Trends in Melting and Boiling Temperatures of the Elements of Periods 2 And 3 Of the Periodic Table in Terms Questions

Identify the trend or anomaly from data, select the relevant atomic or structural factor and compare attraction or bond strength before stating the property change.

Syllabus
First assessment 2019
Course
Chemistry YCH11
Level
AS

Exam points

  • Explain ionisation-energy trends through nuclear charge, shielding and atomic radius.
  • Explain subshell or paired-electron anomalies using configuration and repulsion.
  • Interpret melting points through metallic, giant covalent or molecular structure.

Edexcel A-Level Chemistry AS 2.18 Explain I the Trends in Melting and Boiling Temperatures of the Elements of Periods 2 And 3 Of the Periodic Table in Terms Questions question 1

[Maximum number: 3]

This question is about the bonding in the elements of Period 3 in the Periodic Table. The melting temperatures of the Period 3 elements are shown in the table.

Table for Question Edexcel A-Level Chemistry AS 2.18 Explain I the Trends in Melting and Boiling Temperatures of the Elements of Periods 2 And 3 Of the Periodic Table in Terms Questions question 1 — Edexcel A-Level Chemistry AS

Explain why the melting temperature of silicon is much higher than that of phosphorus, by referring to their structures.

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