Metallic Bonding

Question 1

Where does metallic bonding occur?

Answer 1

between metal atoms

Question 2

What do all metals consist of?

Answer 2

a lattice of positive ions existing in a sea of delocalised negative electrons

Question 3

Where does electrostatic attraction occur in metallic bonding?

Answer 3

between positive metal ions and negatively charged sea of delocalised electrons

Question 4

What is the number of delocalised electrons dependent on?

Answer 4

how many electrons are lost by each metal atom

Question 5

What does metallic bonding form?

Answer 5

giant structures

Question 6

What are the properties of structures that are metallically bonded?

Answer 6

1. good conductors of heat and electricity - sea of electrons carry charge, energy spread by increasingly vigorous vibrations of closely packed ions
2. strong
3. ductile and malleable - rows are arranged so that they can slide over one another
4. high melting/boiling point - giant structure

Question 7

What is the strength of a metallic bond dependent on?

Answer 7

-charge of ion - greater charge, more delocalised electrons, stronger electrostatic attraction
-size of ion - small, electrons close to nucleus, stronger electrostatic attraction