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Edexcel IGCSE Chemistry 1.40 ionic dot-and-cross diagrams

Practise ionic dot-and-cross questions by drawing ions, showing electron transfer and using the correct atom ratio for compounds.

Syllabus
First assessment 2019
Course
Chemistry 4CH1

Exam points

  • Draw outer-shell diagrams for ions in compounds such as sodium oxide or calcium chloride.
  • Include correct ion charges and full outer shells after electron transfer.
  • Describe electron transfer using the correct atom ratio and named ions.

1.40 Ionic dot-and-cross diagrams question 1

[Maximum number: 3]

This question is about Group 2 elements and their compounds.

Magnesium oxide is an ionic compound.

The diagrams show the atoms of magnesium and oxygen.

Figure for Question 1.40 Ionic dot-and-cross diagrams question 1 — Edexcel IGCSE Chemistry

Draw diagrams to show the structure of each ion in magnesium oxide. Include the charge on each ion.

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