Metallic Bonding

Question 1

What type of structure is a metal structure?

Answer 1

Regular lattice

Question 2

How is metallic bonding caused?

Answer 2

It is caused because the electrons in the highest energy level of a metal atom have the ability to become delocalised

Question 3

Why are the delocalised electrons able to move?

Answer 3

They are free to move through the metal in a ‘sea’ of electrons

Question 4

What happens to the metal nuclei?

Answer 4

This gives the metal nuclei a positive charge which is attracted to the negative charge on the delocalised electrons

Question 5

What type of force of attraction occurs?

Answer 5

There is a powerful force of attraction between the positive metal nuclei and the negative delocalised electrons.

Question 6

What is a non-polar molecule?

Answer 6

A molecule where the electrons are distributed evenly throughout the molecule. E.g. covalent bonding in
chlorine

Question 7

What is a polar molecule?

Answer 7

A molecule with a partial positive charge in one part of the molecule and a similar negative charge in another part due to an uneven electron distribution

Question 8

What happens in a non-polar covalent bond?

Answer 8

Electrons are shared equally

Question 9

What happens in a polar covalent bond?

Answer 9

Electrons are shared unequally

Question 10

What happens in a ionic bond?

Answer 10

Electrons are transferred

Question 11

What is meant by electronegativity?

Answer 11

This is the tendency of an atom to attract a bonding pair of electrons. Atoms that have similar electronegativities form covalent bonds