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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

Practise explaining ionisation-energy and melting-point trends using nuclear attraction, shielding, subshell occupancy, structure and bonding strength with Edexcel IAL Chemistry evidence.

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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