O LevelChemistryCambridgeTopic Questions2. Atoms, Elements & Compounds2.7 Metallic Bonding

Metallic Bonding (Cambridge O Level Chemistry)

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11 mark

Extended Only

Which statement correctly describes the bonding in metals?

  • A lattice of negative ions in a “sea of electrons”.

  • A lattice of positive ions in a “sea of electrons”.

  • A lattice of neutral atoms with delocalised electrons.

  • A lattice of negative ions with delocalised electrons.

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21 mark

Extended Only

Which row provides a correct description of the properties of metals?

  melting point boiling point conducts electricity
A high low cross times
B low high ✓
C low low cross times
D high high ✓

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11 mark

Metallic bonds are very strong and give metals their properties. Which of the following definitions is correct for a metallic bond?

  • A metallic bond is formed by the electrostatic attraction that occurs due to electron transfer between metal atoms.

  • A metallic bond is formed by the electrostatic attraction between the positive ions and the delocalised electrons.

  • A metallic bond is formed by the electrostatic attraction that occurs due to the uneven sharing of electrons between metal atoms.

  • A metallic bond is formed by the intermolecular forces between the positive metal ions and the delocalised electrons.

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21 mark

Metals are malleable and ductile and can be hammered and pulled into useful shapes.

Which statement correctly explains these properties?

  • Layers of atoms in the metal lattice are rigid and held strongly together so they cannot move.

  • Layers of atoms in a metal can slide over one another and break the attractive forces that hold them together.

  • Layers of atoms in a metal can slide over one another and new attractive forces are formed between the metal ions and the delocalised electrons.

  • Layers of atoms in a metal cannot slide over one another and the attractive forces between the metal ions and the delocalised electrons are unbreakable.

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