GCSE · Chemistry · AQA · Spec 8462
Group 0 noble gases
From electrons to properties
Follow the link from outer-shell arrangement to the behaviour of Group 0 elements.
- A stable arrangementNoble-gas atoms have stable arrangements of electrons, with eight electrons in the outer shell except helium, which has two.
- Little reactionBecause the electron arrangement is stable, the noble gases are unreactive.
- Molecules rarely formThe same stable arrangement means noble gases do not easily form molecules.
Reading the Group 0 trend
Use relative atomic mass to predict the direction of the boiling-point change.
Group 0 essentials
Learn the small set of terms that carries the whole topic.
Predict, then check
Use the trend before revealing the answer.
Noble gas P is lower down Group 0 and has a greater relative atomic mass than noble gas Q. Which prediction fits the Group 0 trend?
WHAT YOU'VE LEARNED
A quick recap of today's lesson.
Connect stable outer electron shells with low reactivity and the boiling-point trend down the group.
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