Group VIII - Noble gases
Cambridge IGCSE Chemistry (0620) · Unit 8: The Periodic Table · 10 flashcards
Group VIII - Noble gases is topic 8.4 in the Cambridge IGCSE Chemistry (0620) syllabus , positioned in Unit 8 — The Periodic Table , alongside Arrangement of elements, Group I - Alkali metals and Group VII - Halogens. In one line: Noble Gases have a full outer electron shell (8 electrons, except Helium which has 2). This stable electron arrangement makes them very unreactive.
This topic is examined in Paper 1 (multiple-choice) and Papers 3/4 (theory), plus Paper 5 or Paper 6 (practical / alternative to practical).
The deck below contains 10 flashcards — 2 definitions, 3 key concepts and 5 identification cards — covering the precise wording mark schemes reward. Use the 2 definition cards to lock down command-word answers (define, state), then move on to the concept and application cards to handle explain, describe and compare questions.
What electronic configuration makes Noble Gases unreactive
Noble Gases have a full outer electron shell (8 electrons, except Helium which has 2). This stable electron arrangement makes them very unreactive.
What the Cambridge 0620 syllabus says
Official 2026-2028 specThese are the exact learning objectives Cambridge sets for this topic. Match the command word (Describe, Explain, State, etc.) in your answer to score full marks.
- Describe Describe the transition elements as metals that: (a) have high densities (b) have high melting points (c) form coloured compounds (d) often act as catalysts as elements and in compounds
- Describe Describe transition elements as having ions with variable oxidation numbers, including iron(II) and iron(III) Supplement
What is the general trend in reactivity of Group VIII (Noble Gases)?
Noble gases are generally unreactive due to their full outer electron shells. Their stability makes them inert under normal conditions, resisting chemical reactions.
What electronic configuration makes Noble Gases unreactive?
Noble Gases have a full outer electron shell (8 electrons, except Helium which has 2). This stable electron arrangement makes them very unreactive.
Name three uses of Argon.
Argon is used in: 1. Light bulbs (to prevent filament oxidation). 2. Welding (as a shielding gas). 3. As a protective atmosphere in metal refining.
Why is Helium used in balloons and airships?
Helium is lighter than air, making it buoyant. It is also non-flammable, making it safer than hydrogen which was previously used.
Which noble gas is used in advertising signs?
Neon is commonly used in advertising signs because it emits a bright reddish-orange light when an electric current is passed through it.
Besides Neon, name another noble gas used in lighting.
Krypton is used in some high-intensity lamps and flash photography due to its ability to produce a bright, white light.
What is the trend in boiling points as you go down Group VIII?
The boiling points of noble gases increase as you go down the group due to increasing van der Waals forces between the atoms because there are more electrons and thus a larger temporary dipole.
Give an example of how the inertness of noble gases is useful.
Argon's inertness is useful in preserving ancient documents. It is used to fill display cases to prevent oxidation and degradation of the artifacts.
Which Noble gas is naturally radioactive?
Radon is a radioactive noble gas formed from the decay of radium. It is a health hazard if it accumulates in poorly ventilated areas.
Why are Noble Gases monatomic?
Noble gases exist as single atoms (monatomic) because they have a full outer shell of electrons, making them chemically stable and unlikely to form bonds with other atoms.
Key Questions: Group VIII - Noble gases
What electronic configuration makes Noble Gases unreactive?
Noble Gases have a full outer electron shell (8 electrons, except Helium which has 2). This stable electron arrangement makes them very unreactive.
Why are Noble Gases monatomic?
Noble gases exist as single atoms (monatomic) because they have a full outer shell of electrons, making them chemically stable and unlikely to form bonds with other atoms.
Tips to avoid common mistakes in Group VIII - Noble gases
- ● List out the common gases (O2, N2, CO2, NH3, Cl2, etc.) and note their distinctive physical and chemical properties.
- ● Groups are the vertical columns, while periods are the horizontal rows — picture a 'group' of people standing tall, and a 'period' at the end of a horizontal sentence.
- ● Draw out the full structural formulas of alcohols and carboxylic acids side-by-side, paying close attention to the functional groups' arrangement.
More topics in Unit 8 — The Periodic Table
Group VIII - Noble gases sits alongside these Chemistry decks in the same syllabus unit. Each uses the same spaced-repetition system, so progress in one informs the next.
Cambridge syllabus keywords to use in your answers
These are the official Cambridge 0620 terms tagged to this section. Mark schemes credit responses that use the exact term — weave them into your answers verbatim rather than paraphrasing.
Key terms covered in this Group VIII - Noble gases deck
Every term below is defined in the flashcards above. Use the list as a quick recall test before your exam — if you can't define one of these in your own words, flip back to that card.
Related Chemistry guides
Long-read articles that go beyond the deck — cover the whole subject's common mistakes, high-yield content and revision pacing.
How to study this Group VIII - Noble gases deck
Start in Study Mode, attempt each card before flipping, then rate Hard, Okay or Easy. Cards you rate Hard come back within a day; cards you rate Easy push out to weeks. Your progress is saved in your browser, so come back daily for 5–10 minute reviews until every card reads Mastered.
Study Mode
Space to flip • ←→ to navigate • Esc to close
You're on a roll!
You've viewed 10 topics today
Create a free account to unlock unlimited access to all revision notes, flashcards, and study materials.
You're all set!
Enjoy unlimited access to all study materials.
Something went wrong. Please try again.
What you'll get:
- Unlimited revision notes & flashcards
- Track your study progress
- No spam, just study updates