A-LevelChemistryChemical bonding9701/12 · Feb/Mar 2024 · Q71 Mark
The table shows the physical properties of four substances. Which substance has a giant covalent structure?
Amelting point /°C: -119, boiling point /°C: 39, electrical conductivity of solid: poor, electrical conductivity of liquid: poor, electrical conductivity of aqueous solution: insoluble
Bmelting point /°C: -115, boiling point /°C: -85, electrical conductivity of solid: poor, electrical conductivity of liquid: poor, electrical conductivity of aqueous solution: good
Cmelting point /°C: 993, boiling point /°C: 1695, electrical conductivity of solid: poor, electrical conductivity of liquid: good, electrical conductivity of aqueous solution: good
Dmelting point /°C: 1160, boiling point /°C: 2230, electrical conductivity of solid: poor, electrical conductivity of liquid: poor, electrical conductivity of aqueous solution: insoluble
✓ Correct answer
D: melting point /°C: 1160, boiling point /°C: 2230, electrical conductivity of solid: poor, electrical conductivity of liquid: poor, electrical conductivity of aqueous solution: insoluble
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