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Group 0: The Noble Gases (AQA GCSE Chemistry: Combined Science)
Revision Note
The noble gases
The noble gases
Noble gases are located in the last group on the right hand side of the Periodic Table
Examiner Tip
You do not need to know specific uses of noble gases but be aware that they are useful in these applications due to their inertness.
Physical properties of the noble gases
- There are trends in the physical properties of the noble gases
- The noble gases have very low melting and boiling points
- Going down the group melting and boiling point increases because:
- The atoms get larger as you move down the group and their relative atomic mass increases
- This leads to an increase in intermolecular forces between atoms
- Therefore more energy is needed to overcome these
- Although elements further down the group have higher boiling points, they still lie below 0 ºC.
- Helium has the lowest boiling point of all known elements at -269 ºC, while radon boils at around -60 ºC.
Boiling points of the noble gases
This graph shows the trend in boiling point of the noble gases
Examiner Tip
Exam questions often give you the boiling point of a noble gas and ask you to estimate the value of another one, so it is important to remember the general trends in the Group 0 elements. You do not need to learn these values exactly!
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