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CAIE IGCSE Chemistry 2.7.2 Metallic Properties From Questions

Explain metal conductivity using mobile delocalised electrons in a lattice of positive ions.

Syllabus
2026–2028
Course
Chemistry 0620

Exam points

  • explain why metals conduct electricity when solid
  • identify mobile delocalised electrons in metals
  • relate metallic bonding to conductivity when solid and molten
  • use metallic structure to explain malleability
  • distinguish mobile electrons from fixed metal ions

CAIE IGCSE Chemistry 2.7.2 Metallic Properties From Questions question 1

[Maximum number: 1]

This question is about the elements sodium and fluorine and the compound sodium fluoride.

Some properties of sodium, fluorine and sodium fluoride are shown in Table 3.1.

Table 3.1

Table 3.1

Explain why sodium conducts electricity when it is a solid.

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