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Illustrate how ionic bonds are formed between elements from Group I and Group VII, using dot-and-cross diagrams.

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Cambridge IGCSE ChemistryAtoms, elements and compoundsCore content

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Quick explanation

Illustrate how ionic bonds are formed between elements from Group I and Group VII, using dot-and-cross diagrams

  • This point belongs to Ions and ionic bonds, especially Ions and ionic bonds outcomes.
  • You need to be able to illustrate how ionic bonds are formed between elements from Group I and Group VII, using dot-and-cross diagrams.
  • The key ideas to know are Describe and Draw.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

DescribeDraw

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Paper 3 structured question: Ions and ionic bonds

Paper 3Theory (Core)1 marks

Description

Ionic Bonding

Sodium (Na) is in Group I and chlorine (Cl) is in Group VII. Sodium loses one electron to form Na+, and chlorine gains one electron to form Cl-.

  1. a

    State the charge of the sodium ion formed during this process.

    Aim for approximately 1 distinct marking point.

    [1]
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