Why does copper have a higher melting point than aluminium?

  • #1
Why does copper have a higher melting point than aluminium? Why does the melting point increase as you go down groups anyway?
Aluminium has higher charge (+3) and a smaller radius, meaning that there is a higher charge density and thus stronger forces of attraction to the lattice. While copper has a charge of +1 and a bigger radius. However, Copper has a higher number of protons, or a stronger positive charge in the nucleus, is this the reason ?
 

Answers and Replies

  • #3
Borek
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Aluminium has higher charge (+3)

Metallic aluminum has no charge and consists of neutral atoms.
 

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