C4.1.4

Question 1

Why are the Group 0 elements called the noble gases?

Answer 1

• they are every unreactive, they take part in very few chemical reactions(inert)
• monoatomic

Question 2

They are non-metals, and are all in the gas state at room temperature

Answer 2

They are non-metals, and are all in the gas state at room temperature

Question 3

Why are the noble gases so unreactive?

Answer 3

• they have complete electron shells
• they do not have a tendency to lose/gain to form ions in reactions,or to share electrons to form molecules in reactions

Question 4

What are the trends in noble gases?

Answer 4

• monoatomic, they exist as single atoms with weak intermolecular forces
• the forces are easily overcome by heating, thats why they have low boiling points

Question 5

What happens as you go down the group?

Answer 5

• the attractive forces between the atoms get stronger
• the boiling point increases

Question 6

Why do they have low densities?

Answer 6

• their atoms are far apart in the gas state, so there is very little mass in a given volume
• as you go down, density increases