Metallic Bonding

1 mark · Easy

State one reason why metals are good conductors of electricity.

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They contain delocalised electrons that are free to move.

Also accept: Metals have free electrons.; Electrons move through the structure.; Delocalised electrons move and carry charge.

Common mistakes: Ions move in metals.; Metals have gaps between atoms.

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Marking points

B1 · 1 mark · States correctly that delocalised/free electrons move through the structure.

Worked solution

Metals are good conductors because they have delocalised electrons that are free to move throughout the structure and carry electrical charge.