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Edexcel A-Level Chemistry AS 3.20 Metals Consist of Giant Lattices of Metal Ions in a Sea of Delocalised Electrons Questions

Count electron regions and lone pairs, identify the parent geometry and state the accepted angle, then explain any deviation through stronger lone-pair repulsion.

Syllabus
First assessment 2019
Course
Chemistry YCH11
Level
AS

Exam points

  • Complete shape-and-angle tables for methane, ammonia, water, BeCl2 and BCl3.
  • Draw and label three-dimensional structures for CO2, PCl5, SF6 and related species.
  • Explain bond-angle changes when lone pairs or coordinate bonds alter repulsion.

Edexcel A-Level Chemistry AS 3.20 Metals Consist of Giant Lattices of Metal Ions in a Sea of Delocalised Electrons Questions question 1

[Maximum number: 3]

This question is about the element calcium and some of its compounds.

Calcium reacts with chlorine to form calcium chloride.

Ca( s)+Cl2( g)→CaCl2( s)\mathrm{Ca}(\mathrm{~s})+\mathrm{Cl}_{2}(\mathrm{~g}) \rightarrow \mathrm{CaCl}_{2}(\mathrm{~s})

Complete the table to indicate the type(s) of bonding and structure in the species involved in this reaction.

Table for Question Edexcel A-Level Chemistry AS 3.20 Metals Consist of Giant Lattices of Metal Ions in a Sea of Delocalised Electrons Questions question 1 — Edexcel A-Level Chemistry AS
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