Metallic bonding：练习题

• a.

  Electrical conductivity

• b.

  High density

• c.

  High melting point

• d.

  Malleability

• a.

  The weak intermolecular forces between metal atoms.

• b.

  The strong electrostatic attraction between shared pairs of electrons.

• c.

  The attraction between positive ions and negative ions.

• d.

  The strong electrostatic attraction between positive ions and a sea of delocalised electrons.

• a.

  Magnesium ions have a \( 2+ \) charge and contribute more delocalised electrons, resulting in stronger bonding.

• b.

  The metallic bonds in sodium are more directional and therefore easier to break with heat.

• c.

  Magnesium atoms are larger than sodium atoms, providing a greater surface area for bonding.

• d.

  Sodium is in Group 1, so its ions are more shielded by internal electron shells.

• a.The attraction between molecules due to weak intermolecular forces.
• b.The attraction between positive metal ions and negative non-metal ions.
• c.The electrostatic attraction between positive metal ions and a sea of delocalised electrons.
• d.The sharing of electron pairs between two metal atoms.

• a.

  The particles are arranged in a regular, repeating three-dimensional pattern.

• b.

  The lattice is held together by strong electrostatic forces of attraction.

• c.

  The substance is able to conduct electricity while in the solid state.

• d.

  The substance is brittle and shatters when a layer of the lattice is shifted.

先自己写一遍答案，再对照解题步骤。

先自己写一遍答案，再对照解题步骤。