All noble gases are:
- Colourless gases at room temperature
- Monatomic — exist as single atoms (He, Ne, Ar), not molecules
- Very unreactive — don't form compounds naturally
- Non-flammable — won't catch fire
Trends down the group:
- Boiling point increases (He: -269°C → Rn: -62°C)
- Density increases
This key facts covers Properties of Noble Gases within Group 0: Noble Gases for GCSE Chemistry. Revise Group 0: Noble Gases in Atomic Structure for GCSE Chemistry with 22 exam-style questions and 20 flashcards. This topic appears less often, but it can still be a useful differentiator on mixed-topic papers. It is section 5 of 12 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Practice questions for Group 0: Noble Gases
Which group in the periodic table contains the noble gases?
Helium has only 2 electrons in its outer shell, yet it is still unreactive. Explain why.
Quick recall flashcards
Name 3 noble gases
Helium, Neon, Argon (also Krypton, Xenon, Radon)
Why is neon used in signs?
Glows bright red-orange when electricity passes through