Metallic bonding Flashcards
1
Q
What is metallic bonding
A
Electrostatic force of attraction between the metal ions and delocalised electrons
2
Q
Describe the structure in metallic bonding
A
- giant metallic lattice
- layers of metal ions surrounded by a sea of delocalised electrons
3
Q
Explain why there are high boiling/melting points in metallic bonding
A
- Strong electrostatic force of attraction between the metal ions and delocalised electrons
- which require a large amount of energy to be overcome
4
Q
Explain why electricity can be conducted in metallic bonding
A
- delocalised electrons are free to move
5
Q
Explain why metallic bonds are malleable
A
- metal ions arranged in layers so are able to slide over one another, so metals can be bent and shaped.
6
Q
What is an alloy
A
A mixture of a metal and one or more elements, usually other metals or carbon
7
Q
Are metallic bonds harder or softer than pure metals
A
Harder - extra atoms of mixed elements disrupt the layers of metal ions due to the difference in size
- layers can no longer slide over each other
