metallic bonding Flashcards
1
Q
what is metallic bonding
A
the electrostatic attraction between the positive ions and the sea of delocalised electron
- layers of positive ions surrounded by a sea of delocalised electrons
2
Q
type of strucutre
A
giant structures
- lattice as they are arranged in a regular pattern
3
Q
properties of metallic bonding
A
- high melting and boiling points because lots of energy is needed to overcome the strong electrostatic forces of attraction between the positive ions and the delocalised electrons
- can conduct electricity and heat
- malleable - the layers of positive ions can slide over each other
4
Q
why does the melting point increase across the groups
A
the higher the charge of the positive ion
the stronger the forces of attraction between the ion and decollated electrons
because you will have more delocalised electrons per positive ion
so the higher the melting point
5
Q
why can metals conduct electricity and heat
A
the delocalised electrons can move and carry charge
