IB Chemistry HL S2.3 The metallic model questions

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Question 1

Multiple choiceEasy1 mark

A piece of aluminium can be hammered into a thin sheet without fragmenting. Which feature of its metallic structure explains this malleability?

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Answer: C. Metallic bonding is the electrostatic attraction between lattice cations and delocalized electrons. When layers of cations shift during hammering, the electrons still attract the cations in their new positions, so the structure remains bonded.

A: Treats electrons as localized pairs linking particular cations, rather than as delocalized electrons. B: Assigns movement to cations passing through stationary electrons. D: Reverses the electrostatic interaction: like-charged cations repel rather than attract.

Remember: In metallic malleability, layers can shift while attraction to the delocalized electrons is maintained.

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